Subjective Performance Measures Research Articles

The Moderating Role of Genetics on the Effectiveness of the Mindfulness-Based Stress Reduction for Breast Cancer (MBSR(BC)) Program on Cognitive Impairment.

Genetics may influence symptoms experienced by breast cancer survivors (BCS) by moderating the effects of stress-reducing interventions, including the Mindfulness-Based Stress Reduction (MBSR(BC)) program, to reduce symptom severity. As part of a larger clinical trial, the aim of this study was to evaluate genetic variants as moderators of MBSR(BC) on improvements among BCS in cognitive functioning and symptoms. BCS (n = 128) were randomized to MBSR(BC) or the Breast Cancer Education Support Program. Objective neuropsychological and subjective measures of cognitive performance, and psychological and physical symptoms were collected at baseline, 6, 12, and 26 weeks. Linear mixed models were implemented to identify MBSR(BC)'s effects over time. A total of 22 single nucleotide polymorphisms (SNPs) from 20 genes known to be related to these symptoms were investigated using genomic DNA. These SNPs were tested as moderators of MBSR(BC) program effects. Results showed MBSR(BC) participants experienced significantly greater benefits in cognitive functioning, however, the level of benefit varied based on one's genetic profile. Effects sizes, consistency across similar measures were investigated. Among 22 candidate SNPs, rs4680 in COMT, rs1800497 in ANKK1, and rs6277 in DRD2 demonstrated the strongest, most consistent positive effects in moderating MBSR(BC)'s impact on cognitive outcomes. Although the effects were small, this translational research may potentially identify BCS with genotypes that would be most influenced by the MBSR(BC) program. These results may be used to develop personalized intervention programs tailored to the genetic profile of each breast cancer survivor who received chemotherapy or chemotherapy and radiation. ClinicalTrials.gov, https://www.ClinicalTrials.gov Registration Number: NCT02786797.

Design, Development, and Validation of a Military Orientated Re-configurable Cognitive Task Battery

The United Kingdom’s Defence Science and Technology Laboratory (Dstl) has developed an innovative military cognitive task battery tool titled: Interactive Measures of Performance and Assessment of Cognitive Tasks (IMPACT). The purpose of the tool is to support the objective assessment of cognitive task performance and task demand across a range of military system types, use cases and experimental settings. IMPACT consists of six, reconfigurable, generic military tasks, and an intuitive user interface for the experimenter to configure the tool and collect data. Initial validation of the IMPACT tool has been undertaken and a number of early adopters have used the tool to support trials, system development and experimentation. The validation results show that the six individual IMPACT tasks broadly stimulate the associated cognitive attributes; as mapped and originally conceived during the design and development of the tool; as measured by subjective assessment techniques, psychophysiological monitoring, and performance measures. IMPACT continues to be refined in response to feedback from the validation exercise and early adopters of the tool.

Effect of repeated sessions of transcranial direct current stimulation on subjective and objective measures of recovery and performance in soccer players following a soccer match simulation

We investigated the effect of repeated sessions of anodal transcranial direct current stimulation (a-tDCS) on subjective and objective measures of recovery, cognitive and sport-specific performance in professional soccer players following a soccer match simulation (SMS). Sixteen soccer players participated in this randomized, crossover, and sham-controlled study. They completed baseline assessments of well-being, total quality recovery (TQR), electromyographic activity (EMG) of the thigh muscles, countermovement jump (CMJ), and cognitive and Loughborough soccer passing test (LSPT) skills. Then, the participants engaged in an SMS routine (2 × 45 min, 15-min intervals). There was no significant difference in rating of perceived exertion (RPE) during the SMS in the anodal (17.25 ± 0.85) and sham (16.93 ± 0.92) conditions (p = 0.19). Following the SMS, the participants were randomized to receive three sessions of a-tDCS (2 mA, 20 min, +F3/−F4) targeting the left dorsolateral prefrontal cortex (DLPFC) or sham immediately after, 24 h, and 48 h after the SMS. Finally, the same outcome measures were evaluated 24 and 48 h following the SMS. A two-way repeated-measures ANOVA showed that a-tDCS stimulation improved passing skills (decreased time to perform the LSPT and number of errors; all ps < 0.01; d = 0.56–2.9) and increased the feeling of well-being (p = 0.02; d = 2.8), with no effect on TQR, cognitive performance, CMJ performance, and EMG. Therefore, the results of the present study indicate, for the first time, that repeated a-tDCS could be used as an adjunct method to accelerate soccer players' well-being and technical performance recovery, particularly after congested matches and/or training sessions. These findings may also be applicable to other team sports with characteristics similar to soccer (e.g., futsal, handball, basketball, etc.).

Effects of a Dietary Microalgae (Arthrospira platensis) Supplement on Stress, Well-Being, and Performance in Water Polo Players: A Clinical Case Series.

A common tactic used by athletes to improve performance, lessen tiredness, and hasten recovery is dietary supplementation. We aimed to assess the role of a microalgae dietary liquid supplement additivated with Copper 22.5% NRV in water polo players' performance. Twenty male water polo players were split into two groups: ten (spirulina group) took a twice-daily nutritional supplement containing 15 mL of spirulina liquid extract (titrated in Phycocyanin 1 mg/mL) and additivated with Copper 22.5% NRV for eight weeks, and ten (the placebo group) did not take the supplement. Subjective evaluations were finished using the Athlete's Subjective Performance Scale (ASPS). Levels of the biomarker creatine phosphokinase (CPK) were also assessed. The spirulina group's mean total ASPS score increased significantly from baseline to follow-up and was significantly better than that of the placebo group (p < 0.001). Conversely, ASPS ratings in the placebo group slightly decreased. A positive correlation between spirulina supplementation and less severe ASPS was found using correlation matrix analysis. However, there was a slight difference in CPK levels from the baseline to the follow-up in the spirulina group. A dietary supplement comprising spirulina and copper may help water polo players' subjective performance measurements by lowering muscular tension. Larger, randomized controlled trials are yet required.

What the Eyes Don’t See: An Objective Assessment of Players’ Contribution to Team Success in Men’s Rugby League

ABSTRACT Purpose: This study addresses the lack of objective player-based metrics in men’s rugby league by introducing a comprehensive set of novel performance metrics designed to quantify a player’s overall contribution to team success. Methods: Player match performance data were captured by Stats Perform for every National Rugby League season from 2018 until 2022; a total of five seasons. The dataset was divided into offensive and defensive variables and further split according to player position. Five machine learning algorithms (Principal Component Regression, Lasso Regression, Random Forest, Regression Tree, and Extreme Gradient Boost) were considered in the analysis, which ultimately generated Wins Created and Losses Created for offensive and defensive performance, respectively. These two metrics were combined to create a final metric of Net Wins Added. The validity of these player performance metrics against traditional objective and subjective measures of performance in rugby league were evaluated. Results: The metrics correctly predicted the winner of 80.9% of matches, as well as predicting the number of team wins per season with an RMSE of 1.9. The metrics displayed moderate agreement (Gwet AC1 = 0.505) when predicting team of the year award recipients. When predicting State of Origin selection, the metrics displayed moderate agreement for New South Wales (0.450) and substantial agreement for Queensland (0.652). Conclusion: The development and validation of these objective player performance metrics represent significant potential to enhance talent evaluation and player recruitment.

Effects of training methods on performance of a scaffolding task for workers with different spatial ability

With software developments and advances in display technologies substantially improved, augmented reality (AR) application has gained popularity. In this study, we discuss using classic PowerPoint and AR for two kinds of scaffolding tasks (task-lifeline assembly and hedge assembly) for users with different spatial ability. We considered both objective and subjective measures of performance, i.e., correct rate and system usability and the ITC-sense of presence inventory (ITC-SOPI) scale. The results of the study show that participants using AR achieved higher operating performance than those using PowerPoint. Furthermore, the users’ learning effect was influenced by spatial ability when using PowerPoint. Participants with high spatial ability achieved higher performance than participants with low spatial ability in PowerPoint. However, participants who used AR as a training method did not show significantly different operating performance at different levels of spatial ability. Consequently, AR was believed to be a potential method for enhancing training performance.

Metacognitive Awareness and the Subjective Experience of Remembering in Aphantasia.

Individuals with aphantasia, a nonclinical condition typically characterized by mental imagery deficits, often report reduced episodic memory. However, findings have hitherto rested largely on subjective self-reports, with few studies experimentally investigating both objective and subjective aspects of episodic memory in aphantasia. In this study, we tested both aspects of remembering in aphantasic individuals using a custom 3-D object and spatial memory task that manipulated visuospatial perspective, which is considered to be a key factor determining the subjective experience of remembering. Objective and subjective measures of memory performance were taken for both object and spatial memory features under different perspective conditions. Surprisingly, aphantasic participants were found to be unimpaired on all objective memory measures, including those for object memory features, despite reporting weaker overall mental imagery experience and lower subjective vividness ratings on the memory task. These results add to newly emerging evidence that aphantasia is a heterogenous condition, where some aphantasic individuals may lack metacognitive awareness of mental imagery rather than mental imagery itself. In addition, we found that both participant groups remembered object memory features with greater precision when encoded and retrieved in the first person versus third person, suggesting a first-person perspective might facilitate subjective memory reliving by enhancing the representational quality of scene contents.

PENGARUH PENYEBAB KEGAGALAN BERWIRAUSAHA TERHADAP PEMBELAJARAN DARI KEGAGALAN BERWIRAUSAHA DAN DAMPAKNYA TERHADAP KINERJA UMKM

The main objective of this research is to examine the influence of the causes of entrepreneurial failure by using two types of causes of entrepreneurial failure (internal causes and external causes) on learning from entrepreneurial failure and its impact on the performance of SMEs in DKI Jakarta. The research method used in this research is a quantitative research method using a survey with the analytical tool used, namely Smart PLS version 3.0. which aims to examine the variables that cause internal failure, the causes of external failure, learning from entrepreneurial failure and its impact on business performance variables. The research results show that the variable learning from failure has a significant positive effect on business performance. Likewise, the variables that cause entrepreneurial failure from internal factors have a positive and significant effect on learning from entrepreneurial failure. However, in contrast to the results of testing variables that cause failure from external factors on learning from entrepreneurial failure, it shows that there is no influence on the causes of entrepreneurial failure from external factors on learning from entrepreneurial failure. It is hoped that this research can provide suggestions and input, especially for SMEs, so that they can turn entrepreneurial failures into lessons to improve business performance. This research also has several limitations, including that the SME business sector in this research is still too general, and this research only uses subjective performance measures.

Export market orientation, performance and international partner selection: word-of-mouth referral versus direct contact

PurposeExport market orientation can be broadly divided into intelligence (generation and dissemination) and responsiveness activities. Although previous studies assess intelligence and responsiveness activities, little is known about what type of international channel partner acts as an enabling condition for the impact of these activities on export venture performance. This study aims to examine the extent to which the selection of international channel partners through word-of-mouth referrals versus direct contacts affects the benefits of intelligence and responsiveness activities.Design/methodology/approachData were collected from 246 exporting manufacturers in Japan. To test the hypotheses, we conducted regression analyses using a subjective performance measure at the venture level. We also performed a post hoc analysis using objective performance measure at the function level.FindingsWe find that the extent to which international channel partners are selected through word-of-mouth referrals has a moderating role in the export market-oriented activities–performance linkages. Specifically, it acts as an enabling condition for intelligence activity and a disenabling condition for responsiveness activity.Originality/valueThis study contributes to a better understanding of export market orientation by classifying it into intelligence and responsiveness activities and providing empirical evidence on their different interaction effects with partner selection. It also contributes to the elaboration of agency theory by offering insights into the fit between task characteristics and contract type. Our study is critical for business managers as it suggests guidelines for manufacturing exporters engaging in export market-oriented behaviors and export channel management.

Analysis of statistical estimators and neural network approaches for speech enhancement

Speech communicated is adversely affected by environmental noise. It is important to process the speech and reduce noise for better understanding. Speech enhancement or noise reduction is useful to provide comfort for human or machine listening. Traditional algorithms provide better noise reduction and better-quality speech. Due to the non-stationary nature of noise and the quasi-stationary nature of speech, the traditional methods are proven inadequate in achieving high-quality speech. Later statistical estimators based on Gaussian, and super-Gaussian Probability Density Function (PDF) assumption further improved the enhancement performance. But still, non-stationary noise nature introduces artifacts in processed signal and results in decreased performance. It is observed that neural network approaches and the factorization approach provide better performance even under non-stationary noises by proper training and large database. Different features result in variations in output performance under unseen noise and speaker conditions. It is important to understand the importance and advantages of traditional methods, statistical estimators, and neural network approaches performances. To select the suitable method for a required application, it is essential to consider the trade-off between quality and distortion. In this work, the importance of speech enhancement methods is discussed. Performance measures used for understanding the speech enhancement like Signal to Noise Ratio (SNR), Segmental SNR, Log-Likelihood Ratio (LLR), Weighted Spectral Slope (WSS), Perceptual Evaluation of Speech Quality (PESQ), Short-Time Objective Intelligibility (STOI), Signal to Distortion Ratio (SDR) and Mean Opinion Score (MOS), are given. Highlights of important results are discussed for analyzing better speech enhancement methods for the required application. In this work, performance is compared using objective and subjective performance measures. Simulation results show superior performance when neural network is employed in statistical estimators.

Recovery and stress monitoring in elite ice hockey: A longitudinal pilot-study

Introduction&#x0D; Young athletes in high-level sports experience a greater risk for injury and illness during phases of increased training and competitive load. When recovery is too sparse under these circumstances, psychological and physical health problems could emerge. These are referred to as nonfunctional overreaching or overtraining syndrome, OTS (Daly et al., 2022; Jones et al., 2017; Kiely, 2018). OTS is typically characterized by a reduction in athletic performance that lasts for several weeks to months, accompanied with mood and sleep disturbances, feelings of depression, respiratory tract infections, weight loss, and other symptoms. The prevalence of this condition is high with approxymately 10-20 % of young adult and about 29 % of young athletes from various sports beeing affected (Matos et al., 2011). To our knowledge, no scientifically valid and reliable measurement system currently exists, which would allow the preventive, early diagnosis of overreaching states that might lead to OTS (Weakley et al., 2022). The aim of this study is to develop and evaluate a multiparameter measurement system to assess the recovery and stress state of high-level athletes.&#x0D; Methods&#x0D; Twenty-five male ice hockey players from the highest level Swiss leagues at their respective age group participated (i.e., National League, NL, n = 11, age = 24.8 ± 4.1 years and U20, n = 14, age = 18.5 ± 1.5 years). Over 5-10 weeks during the in-season (i.e., competition phase) measurements were performed on 10 separate days, either after 1 day of passive recovery (T1) or after a day with match/intensive training (T2). The measurement battery included counter movement jump (CMJ), heart rate variability (HRV), executive functions (EF), tympanic temperature (Temp), and Stress Recovery Short Scale (SRSS).&#x0D; Results&#x0D; Independent Student’s t-tests showed significant differences (p &lt; 0.05) between timepoints T1 and T2 for CMJ (peak power per body mass), HRV (sympathic and parasympatic indexes), and SRSS (recovery, stress, total score); but not for CMJ (jump height), EF and Temp.&#x0D; Discussion/Conclusion&#x0D; We conclude that various measurment parameters, including CMJ performance, HRV indices, and subjective ratings of recovery and stress could provide valuable feedback for athletes, coaches, and medical staff regarding a potential overreaching or OTS state.&#x0D; References&#x0D; Daly, E., Pearce, A. J., Esser, P., &amp; Ryan, L. (2022). Evaluating the relationship between neurological function, neuromuscular fatigue, and subjective performance measures in professional rugby union players. Frontiers in Sports and Active Living, 4, Article 1058326. https://doi.org/10.3389/fspor.2022.1058326&#x0D; Jones, C. M., Griffiths, P. C., &amp; Mellalieu, S. D. (2017). Training load and fatigue marker associations with injury and illness: A systematic review of longitudinal studies. Sports Medicine, 47(5), 943-974. https://doi.org/10.1007/s40279-016-0619-5&#x0D; Kiely, J. (2018). Periodization theory: Confronting an inconvenient truth. Sports Medicine, 48(4), 753-764. https://doi.org/10.1007/s40279-017-0823-y&#x0D; Matos, N. F., Winsley, R. J., &amp; Williams, C. A. (2011). Prevalence of nonfunctional overreaching/overtraining in young English athletes. Medicine &amp; Science in Sports &amp; Exercise, 43(7), 1287-1294. https://doi.org/10.1249/MSS.0b013e318207f87b&#x0D; Weakley, J., Halson, S. L., &amp; Mujika, I. (2022). Overtraining syndrome symptoms and diagnosis in athletes: Where is the research? A systematic review. International Journal of Sports Physiology and Performance, 17(5), 675-681. https://doi.org/10.1123/ijspp.2021-0448

Assessment of Drivers' Mental Workload by Multimodal Measures during Auditory-Based Dual-Task Driving Scenarios.

Assessing drivers' mental workload is crucial for reducing road accidents. This study examined drivers' mental workload in a simulated auditory-based dual-task driving scenario, with driving tasks as the main task, and auditory-based N-back tasks as the secondary task. A total of three levels of mental workload (i.e., low, medium, high) were manipulated by varying the difficulty levels of the secondary task (i.e., no presence of secondary task, 1-back, 2-back). Multimodal measures, including a set of subjective measures, physiological measures, and behavioral performance measures, were collected during the experiment. The results showed that an increase in task difficulty led to increased subjective ratings of mental workload and a decrease in task performance for the secondary N-back tasks. Significant differences were observed across the different levels of mental workload in multimodal physiological measures, such as delta waves in EEG signals, fixation distance in eye movement signals, time- and frequency-domain measures in ECG signals, and skin conductance in EDA signals. In addition, four driving performance measures related to vehicle velocity and the deviation of pedal input and vehicle position also showed sensitivity to the changes in drivers' mental workload. The findings from this study can contribute to a comprehensive understanding of effective measures for mental workload assessment in driving scenarios and to the development of smart driving systems for the accurate recognition of drivers' mental states.

Preconditioning Frailty Phenotype Influences Survival and Relapse for Older Allogeneic Transplantation Recipients

Hematologic malignancies disproportionately affect older adults. Hematopoietic cell transplantation (HCT) is potentially curative, but poor overall survival (OS) has limited its use in older adults. Fried's frailty phenotype (FFP) is a geriatric assessment tool that combines objective and subjective performance measures: gait speed, grip strength, activity level, exhaustion, and weight loss. People meeting ≥3 criteria are classified as frail; 1 or 2 criteria, as pre-frail; and 0 criteria, as fit. To evaluate the association of pre-HCT FFP with post-HCT outcomes, we assessed FFP prior to conditioning for 280 HCT recipients age ≥60 years with acute leukemia or a myeloid neoplasm at 3 institutions. When analyzing survival by age group, patients age ≥70 years had inferior OS compared to patients age 60 to 69 years (P = .002), with corresponding OS estimates of 38.9% (95% confidence interval [CI], 27.8% to 49.9%) and 59.3% (95% CI, 51.9% to 65.9%). Nonrelapse mortality (NRM) also was significantly higher in the older patients (P = .0005); the 2-year cumulative incidences of NRM were 38.5% (95% CI, 27.5% to 49.2%) and 17.2% (95% CI, 12.3% to 22.8%), for older and younger recipients, respectively. The cumulative incidences of relapse did not differ by age group (P = .3435). Roughly one-third (35.5%) of the patients were fit, 57.5% were pre-frail, and 7.5% were frail, with corresponding 2-year OS estimates of 68.4% (95% CI, 57.9% to 76.8%), 45.5% (95% CI, 37.4% to 53.2%), and 45.8% (95% CI, 23.4% to 65.8%) (P = .013). FFP was not significantly associated with NRM, but being frail or pre-frail was associated with a higher rate of disease-related deaths (33.3% and 27.3%, respectively, compared with 17.4% for fit patients; P = .043). In univariate modeling of restricted mean survival time with a 3-year horizon (RMST_3y), the factors that were significantly associated were FFP, age, Karnofsky Performance Status (KPS), Disease Risk Index (DRI), and HCT-specific Comorbidity Index (HCT-CI). Of those factors, only FFP (P = .006), age (P = .006), KPS (P = .004), and DRI (P = .005) were significantly associated in multivariate modeling of RMST_3y. Estimates of RMST_3y were computed and 5 risk-groups were created with survival ranging from 31.4 months for those who were age 60 to 69 years, fit, had KPS 90 to 100, and low/intermediate-risk DRI compared to 10.5 months for those who had high-risk features for all the evaluated factors. In univariate and multivariate analyses for restricted mean time to relapse with a 3-year horizon (RMRT_3y), FFP (pre-frail versus fit, P = .007; frail versus fit, P = .061) and DRI (P = .001) were the only significant factors. Predicted RMRT_3y was longest (30.6 months) for those who were fit and had low/intermediate-risk DRI scores and shortest (19.1 months) for those who were frail and had high-risk or very high-risk DRI scores. Both age and FFP impact survival after HCT. Incorporation of FFP into pre-HCT evaluations may improve decision-making and counseling regarding HCT risk for older adults. Our findings support future trials designed to reverse frailty, such as pre-HCT supervised exercise programs, and correlative analyses to unravel the connection of frailty and relapse to generate future targets for intervention. Finally, exploration of novel HCT platforms to reduce relapse in pre-frail and frail patients, as well as reduce NRM in adults age >70 years, are warranted.

Higher rating of perceived exertion and lower perceived recovery following a graded exercise test during menses compared to non-bleeding days in untrained females.

The underrepresentation of the female population in exercise sciences could be attributed, at least in part, to difficulty in appropriately accounting for the effects of the menstrual cycle (MC). Previous studies examining the effects of the MC on aerobic performance and subjective measures of aerobic performance show conflicting results. Purpose: The study examined how the MC affects the objective and subjective measures of aerobic performance within untrained female participants and in comparison with untrained male participants assessed at similar time intervals. Methods: Twenty-one participants (12 females and 9 males) completed a graded exercise test (GXT) on a cycle ergometer. The female participants were tested during their early follicular (EF; menses), ovulatory (O), and mid-luteal (ML) phases of the MC. The male participants were included as the control group and were randomly assigned to a menstrual cycle phase for each visit. During GXT, maximal oxygen consumption (VO2max), respiratory exchange ratio (RER), maximal heart rate (HRmax), peak blood lactate, and rating of perceived exertion (RPE) were determined. Twenty-four hours post-exercise, the perceived recovery status (PRS) was assessed. The MC phase was estimated using basal body temperature (BBT) in the female participants. Results: The male participants obtained a higher peak power and VO2max compared to the female participants (p < 0.05). All objective measures of aerobic performance did not significantly differ across the MC phases or time points that were tested. In the untrained female participants, an effect of the MC phase on RPE was found, with RPE being higher at EF (8.92 ± 0.79) compared to O (7.67 ± 1.23; p < 0.05) and ML (7.75 ± 1.06; p < 0.05). In addition, an effect of the MC phase on PRS was found, with perceived recovery being lower at EF (6.83 ± 0.94) compared to O (8.83 ± 1.12) and ML (8.67 ± 0.65; all p < 0.005) for the untrained female participants. No significant differences in RPE and PRS were found between tests in the untrained male participants. The female participants had lower perceived recovery following EF (6.83 ± 0.94) compared with the male participants (9.00 ± 1.00; p < 0.001). Conclusion: The untrained female participants perceived greater exertion during GXT and impaired recovery following GXT in EF compared to O and ML. These results may be attributed to either a drop in female sex hormone concentrations or discomfort associated with menses. The male participants did not exhibit any changes over time. Future studies using subjective parameters such as perceived exertion to track the internal load of training in the naturally menstruating female population should consider menses.

Comparison of Voice Cloning Algorithms in Zero-shot and Few-shot Scenarios

Voice cloning technology has made significant strides in recent years, with applications ranging from personalized virtual assistants to sophisticated entertainment systems. This study compares nine voice cloning models, focusing on both zero-shot and fine-tuned approaches. Zero-shot voice cloning models have gained attention for their ability to generate high-quality synthetic voices without requiring extensive training data for each new voice and for their capability to perform real-time inference online. In contrast, non-zero- shot models typically require additional data but can offer improved fidelity in voice reproduction. The study comprises two key experiments. The first experiment evaluates the performance of zero-shot voice cloning models, analyzing their ability to reproduce target voices without prior exposure accurately. The second experiment involves fine-tuning the models on target speakers to assess improvements in voice quality and adaptability. The models are evaluated based on key metrics assessing voice quality, speaker identity preservation, and subjective and objective performance measures. The findings indicate that while zero-shot models offer greater flexibility and ease of deployment, fine-tuned models can deliver superior performance.

Comparison of Voice Cloning Algorithms in Zero-shot and Few-shot Scenarios

Voice cloning technology has made significant strides in recent years, with applications ranging from personalized virtual assistants to sophisticated entertainment systems. This study compares nine voice cloning models, focusing on both zero-shot and fine-tuned approaches. Zero-shot voice cloning models have gained attention for their ability to generate high-quality synthetic voices without requiring extensive training data for each new voice and for their capability to perform real-time inference online. In contrast, non-zero- shot models typically require additional data but can offer improved fidelity in voice reproduction. The study comprises two key experiments. The first experiment evaluates the performance of zero-shot voice cloning models, analyzing their ability to reproduce target voices without prior exposure accurately. The second experiment involves fine-tuning the models on target speakers to assess improvements in voice quality and adaptability. The models are evaluated based on key metrics assessing voice quality, speaker identity preservation, and subjective and objective performance measures. The findings indicate that while zero-shot models offer greater flexibility and ease of deployment, fine-tuned models can deliver superior performance.

Emotional Processes and Performance

This study investigates the interplay between stress perception and its intensity concerning performance in a professional setting. Contrary to our initial hypothesis of an interaction between stress perception and intensity, our results reveal that individuals perceiving stress as a challenge exhibit higher performance levels, while those viewing stress as a threat experience significantly lower performance, irrespective of stress intensity. This underscores the importance of how individuals interpret stress in the workplace. Our findings have crucial implications for management, employees, and human resources, suggesting that fostering a positive perception of stress as a challenge could enhance overall performance.&#x0D; Drawing on Lazarus and Folkman's transactional model, stress is viewed as a dynamic relationship between individuals and environmental demands. Stress emerges from the subjective appraisal of events rather than the events themselves. This study distinguishes between threat and challenge appraisals, positing that threat perceptions decrease performance, while challenge perceptions enhance it. Additionally, Hanin's stress intensity theory suggests an optimal performance zone unique to each individual.&#x0D; Eighty-five participants (62 men, 25 women) completed a questionnaire assessing stress perception, intensity, and professional performance. Stress perception was manipulated using the Appraisal of Life Events Scale, measuring threat, challenge, and loss. Intensity was assessed with a single item. Professional performance was measured using the Attainment of Sport Achievement Goals Scale.Contrary to expectations, there was no interaction between stress perception and intensity. Threat perception correlated with decreased performance, while challenge perception correlated with increased performance. No significant effects were observed for loss perception. Satisfaction with performance did not align with increased performance levels.&#x0D; Our hypothesis of an interaction effect was not supported, highlighting the impact of stress perception on performance. Positive stress appraisal correlated with enhanced performance, aligning with Lazarus and Folkman's appraisal approach. However, high-performance levels did not necessarily translate into satisfaction, potentially influenced by self-critical tendencies associated with positive perfectionism. Limitations include subjective performance measurement and reliance on self-reporting, suggesting the need for future research combining subjective and physiological measures.This study emphasizes the influence of stress perception on workplace performance, urging managers to consider employees' interpretations of situations. Fostering a challenge perception and providing clear goals may enhance performance and well-being, acknowledging the unique responses of individuals to stress.

Women in the family business: self and family's influence on their perceptions of financial performance

PurposeThis study examines how women and men in family firms respond differently when asked about perceptions of financial performance. The study poses three research questions around this topic: Are there differences among female and male responses, do those perceptions change if men and women are leaders of the family business and does the family's socioemotional wealth (SEW) influence such responses.Design/methodology/approachThis study uses a quantitative research design to determine if financial performance perceptions of family firms differ based on the gender of the respondents and their leadership position, and second, if SEW's dimensions influence those perceptions, using data from the Successful Transgenerational Entrepreneurship Practices (STEP) survey in 2015.FindingsThe findings indicate that due to the lack of theory regarding gender as a social construct, empirical data collected for family business studies should take under consideration if respondents are women, men, leaders and the family influence in the family business when collecting data from surveys and asking for perceptions of financial performance. Results show that women in family businesses tend to have more positive perceptions of financial performance than men, but if women are leaders, those perceptions not only decrease but become negative. In addition, the family's socioemotional wealth (SEW) exacerbates those tendencies.Originality/valueThis study contributes to the literature by helping to understand the potential limitations of subjective measures of financial performance, as women increasingly become family business leaders. It also contributes to gender studies by demonstrating that there is a lack of gender theoretical perspectives specifically, gender roles, suggesting that differences in self-promotion and self-evaluation between men and women leaders of their family firms. Finally, this study adds to the study of SEW as a multidimensional construct by showing the different effects, or lack of them by each dimension and showing the strong effect of family continuity on the perception of financial performance.

Open-label placebo treatment does not enhance cognitive abilities in healthy volunteers

The use of so-called ‘smart drugs’ such as modafinil to improve cognitive performance has recently attracted considerable attention. However, their side effects have limited user enthusiasm. Open-label placebo (OLP) treatment, i.e., inert treatments that are openly disclosed to individuals as having no active pharmacological ingredient, has been shown to improve various medical symptoms and conditions, including those related to cognitive performance. OLP treatment could therefore be an exciting alternative to pharmacological cognitive enhancers. Here, we used a randomized-controlled design to investigate the effect of a 21-day OLP treatment on several sub-domains of cognitive performance in N = 78 healthy volunteers. Subjective and objective measures of cognitive performance as well as different measures of well-being were obtained before and after the treatment period. Using a combination of classic Frequentist and Bayesian analysis approaches showed no additional benefit from OLP treatment in any of the subjective or objective measures of cognitive performance. Our study thus highlights possible limitations of OLP treatment in boosting cognitive performance in healthy volunteers. These findings are discussed in the light of expectancy-value considerations that may determine OLP efficacy.

Understanding Gaps Between Objective and Subjective Performance Measures: Accreditation of Public Service Organizations and Citizen Satisfaction

Governments use various performance measures to ensure that public services delivered by private-sector providers are safe and meet citizens’ particular needs. These measures can include awarding accreditation and assessing citizen satisfaction. However, few studies have investigated how objective performance measures relate to citizens’ subjective evaluations of providers from the perspective of service users. To fill this gap in the literature, this study closely explores a particular case of the Korean childcare market in which governments administer a large number of private-sector providers that play a dominant role in delivering public services. Our findings indicate the positive accreditation–satisfaction link is weakened when parents may not be aware of a provider's accreditation status or when their selected service provider is nonprofit, as opposed to for-profit. Overall, this study suggests that it is important to understand why there is some degree of incongruence between objective and subjective measures and how these two different performance indicators converge in the data. Special attention should be given to bridging the gap by closely reviewing institutional pressure on service providers and a symbolic impression of accreditation.