Confirmatory Approach Research Articles

The Internal Structure of the WISC-V in Chile: Exploratory and Confirmatory Factor Analyses of the 15 Subtests

The WISC-V is a widely used scale in clinical and educational settings in Chile. Given that its use guides critical decision-making for children and adolescents, it is essential to have evidence of its psychometric properties, including validity based on internal structure. This study analyzed the factor structure of the WISC-V through an exploratory (EFA) and confirmatory (CFA) approach considering the age range of 853 children and adolescents between 6 and 16 years. We obtained evidence favoring the four-factor structure in the EFA, which is a clearer organization in the 15–16 age group. In the confirmatory stage, the best four- and five-factor models showed factor loadings greater than 0.4, except for one subtest in the processing speed domain in the 6–8 age group. The internal consistency ranged from acceptable to good estimates for the best two models. The results support the use of hierarchical factor structures of four and five factors, which offer specific advantages and disadvantages discussed in the article. The implications of these findings in both the professional area of psychology and future research are discussed.

Complexity and accuracy of verbal morphology in written L2 Italian

Abstract The present study aims to verify previous findings on the role of proficiency in the degree of complexity and accuracy of verbal morphemes in written essays from intermediate and advanced L2 Italian learners. In addition, by taking the perspective of usage-based theories on the distributional properties in the input, it investigates the extent to which contingency affects morphological complexity and accuracy by the emergence of cue-outcome associations. Hypotheses on the effects of contingency and proficiency on complexity and accuracy, and on their mutual relationships, are verified by adopting a confirmatory approach and by using Structural equation modeling. Results support the claims for non-universal mechanisms in the acquisition of verbal morphology: proficiency does not affect the morphological complexity of learner texts in the same way in inflectionally rich and poor languages, and the cue-outcome mechanisms of associative learning work to different extents depending on the inflectional systems of the target languages.

Decomposing the True Score Variance in Rated Responses to Divergent Thinking-Tasks for Assessing Creativity: A Multitrait-Multimethod Analysis.

It is shown how the Correlated Traits Correlated Methods Minus One (CTC(M - 1)) Multitrait-Multimethod model for cross-classified data can be modified and applied to divergent thinking (DT)-task responses scored for miscellaneous aspects of creative quality by several raters. In contrast to previous Confirmatory Factor Analysis approaches to analyzing DT-tasks, this model explicitly takes the cross-classified data structure resulting from the employment of raters into account and decomposes the true score variance into target-specific, DT-task object-specific, rater-specific, and rater-target interaction-specific components. This enables the computation of meaningful measurement error-free relative variance-parameters such as trait-consistency, object-method specificity, rater specificity, rater-target interaction specificity, and model-implied intra-class correlations. In the empirical application with alternate uses tasks as DT-measures, the model is estimated using Bayesian statistics. The results are compared to the results yielded with a simplified version of the model, once estimated with Bayesian statistics and once estimated with the maximum likelihood method. The results show high trait-correlations and low consistency across DT-measures which indicates more heterogeneity across the DT-measurement instruments than across different creativity aspects. Substantive deliberations and further modifications, extensions, useful applications, and limitations of the model are discussed.

The Inventory of Callous-Unemotional Traits (ICU) self-report version: Factor structure, measurement invariance, and predictive validity in justice-involved male adolescents.

The Inventory of Callous-Unemotional Traits (ICU) is a widely used measure of callous-unemotional (CU) traits that may aid in the assessment of the diagnostic specifier "with limited prosocial emotions," which has been added to diagnostic criteria for conduct disorder. Though there is substantial support for use of the ICU total score, the scale's factor structure has been highly debated. Inconsistencies in past factor analyses may be largely attributed to failure to control for method variance due to item wording (i.e., half of the items being worded in the callous direction and half worded in the prosocial direction). Thus, the present study used a multitrait-multimethod confirmatory factor analytic approach that models both trait and method variance to test the factor structure of the ICU self-report in a clinically relevant, high-risk sample of justice-involved male adolescents (N = 1,216). When comparing the fit of empirical and theoretical models, goodness of fit indices (χ² = 1105.877, df = 190, root-mean-square error of approximation = .063, comparative fit index = .916, Tucker-Lewis index = .878, standardized root-mean-square residual = .051) provided support for a hierarchical four-factor model (i.e., one overarching callous-unemotional factor, four latent trait factors) when accounting for method variance (i.e., covarying positively worded items). This factor structure is consistent with the way the ICU was constructed and with criteria for the limited prosocial emotions specifier. In addition, measurement invariance of this factor structure across age, race, and ethnicity was supported, and the predictive validity of the ICU was supported across these demographic groups in predicting self-reported antisocial behavior and rearrests over a 5-year period following an adolescent's first arrest. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Toward a more culturally nuanced approach to assessing athletic and exercise identities in sport psychology research: a confirmatory factor analysis approach with South Korean male student-athletes

ABSTRACT The identities of “athlete” and “exerciser” share conceptual similarities but can be differentiated by the ways in which their respective objectives, motivations, and intentions significantly diverge. However, there is a gap in the literature addressing the ambiguity and inconsistent use of these terms in the context of South Korea. The linguistic discrepancy in how these terms are conceptualised and operationalised has important implications for the study of athletes’ long-term health and well-being, where a nuanced perspective on identity is necessary for understanding physical activity behaviour and health outcomes through the transition out of competitive sport. Therefore, the purpose of this study was to refine the terminology used in the previously translated versions of the Athletic Identity Measurement Scale and Exercise Identity Scale and examine whether refined questionnaires appropriately represent similar but distinct concepts. Using software program R, this aim was addressed through a two-factor confirmatory factor analysis of the measurement scales within a sample of South Korean male student-athletes (N = 232, Mage = 19.93 ± 1.22 years). Global fit indices of the final model demonstrated acceptable fit χ2 (101) = 208.512, p < .01, CFI = .95, RMSEA = .07 (90% Confidence Interval: .06 – .08), SRMR = .06 and the local fit indices further supported convergent and discriminant validity of the scales within the sample. Recognition of cultural differences and nuances related to the terms “athlete” vs. “exerciser” and “sport” vs. “exercise” is important for fostering a comprehensive understanding of these identities within sport and exercise psychology research.

Validation of the Dundee Ready Education Environment Measure in Iran through factor analysis

Introduction: Although the Dundee Ready Educational Environment Measure (DREEM) has been accepted for educational environment assessment in various health education backgrounds, limited studies have confirmed evidence for its use in Iran. This study examined a shortened version of the DREEM-50 among Iranian students. Method: A sample of 316 medical and paramedical students from Iran's selected southwest Universities of Medical Sciences in 2020–2021 were invited to complete DREEM-33, a shortened version of the DREEM questionnaire. Psychometric criteria for assessing reliability included Cronbach's alpha, intracluster correlation coefficient (ICC), and composite coefficients. In the construct validity section, discriminant validity was measured using the Fornell and Larcker criteria based on the confirmatory factor analysis approach, and principal component analysis with varimax rotation using the exploratory factor analysis approach. Data were analyzed using SPSS 25, Smartpls 3.2.8, and Lisrel 8.8 software. Results: The shortened version had 33 items spread across all five components of DREEM-50. The exploratory factor analysis showed that the five components with eigenvalues &gt; 1 accounted for 61% of the variance. Also, standard factor loadings ranged from 0.52 to 0.86. Confirmatory factor analysis supported the original five components of the DREEM (χ2= 2106.35; DF=490; P&lt;0.001; CFI=0.94; GFI=0.86; AGFI=0.91; NFI=0.93; SRMR=0.038; RMSEA=0.08). The ICC and Cronbach's alpha for the whole DREEM was 0.92. All subscales had values ranging from 0.72 to 0.93. Conclusion: With satisfactory psychometric properties, the abbreviated DREEM-33 demonstrated its validity and reliability for future use in Iran in various educational environments.

Structural determinants of the uptake of cyber-physical systems for facilities management – a confirmatory factor analysis approach

PurposeCyber-physical systems (CPS) offer improved delivery of facilities management (FM) mandates through their advanced computational capabilities. Using second-order multivariate analysis, this study explores the drivers of the espousal of this digital technology for FM.Design/methodology/approachThe study employed a deductive approach underpinned by a post-positivist philosophical stance using a quantitative technique aided by a well-structured questionnaire. Data retrieved from the study’s respondents were analysed with descriptive statistics, Kruskal–Wallis h-test, exploratory factor analysis and confirmatory factor analysis.FindingsThe result of the analysis conducted portrayed evidence of convergence and good measures while the estimated model parameters all attained prescribed fit indexes. Also, it was revealed that the most influential drivers for the uptake of CPS for FM mandates are resource allocation for system procurement, top management willingness, system stability and compatibility with the previous system.Practical implicationsThe study’s findings unravel the necessitated parameters that would instigate the adoption of CPS for the delivery of FM activities by organisations while also propelling the digital transformation of construction project delivery at the post-occupancy phase.Originality/valueThis is the first study to empirically assess the propelling measures for incorporating CPS for FM using second-order multivariate analysis. Consequently, the study's outcome helps close this knowledge gap.

The Spanish adaptation of the Tampa Scale for Kinesiophobia Heart: psychometric evidence in cardiac rehabilitation patients.

The factor structure of the Tampa Scale of Kinesiophobia Heart version has rarely been adequately analyzed. We aimed to evaluate the psychometric properties of this scale through a variety of exploratory and confirmatory factorial approaches. To perform a translation, cross-cultural adaptation, and psychometric evaluation of the Spanish version of the Tampa Scale of Kinesiophobia Heart in patients attending Cardiac Rehabilitation (TSK-SPA). Cross-sectional study. A Cardiac Rehabilitation unit. Adults with the principal diagnosis of coronary artery disease (83%) who were referred to Cardiac Rehabilitation (N.=194; mean age, 64.28±9.2; 15% women). We performed a translation and a cross-cultural adaptation of the TSK-SPA. The psychometric properties of validity comprising the face, content, and construct validity were then tested. Five factorial models were proposed to analyze the data structure. We examined the validity evidence of the TSK-SPA based on the relationships with other analyzed variables using the SF12 quality of life Questionnaire, the International Physical Activity Questionnaire, the Hospital Anxiety and Depression Scale and the Beck Depression Inventory. The reliability tests included internal consistency and stability over time. The results suggested a four-dimensional structure. Models with more than 1 dimension exhibited undesirable factor loadings or inadequate fit indices. Based on these results, a short version of the scale with 13 items is proposed. In terms of reliability, the TSK-SPA Heart was found internally consistent (α=0.79) and stable over time (test-retest = 0.82). An Exploratory Structural Equation Modeling (ESEM) analysis provided an acceptable fit for a hypothesized 4-factor model with the inclusion of a method factor: the root mean squared error of approximation was <0.05 (RMSEA = 0.046), and the comparative fit indices were >0.95 or close (CFI=0.994, TLI=0.934). Significant positive correlations were observed between the TSK-SPA scores and the measures of anxiety and depression, with correlation coefficients ranging from 0.35 to 0.48. A best-fitting model was identified, and the proposed 13-item TSK-SPA Heart showed sufficient evidence of validity and reliability for Spanish patients with cardiovascular disease. The scale's overall reliability is deemed acceptable, although the factor reliability could be further enhanced. Using this questionnaire on fear or avoidance of movement will improve our understanding of cognitive-behavioral factors in patients with cardiovascular disease, aiding their rehabilitation and optimizing their prognosis.

Pengaruh Green Marketing Dan Pengetahuan Serta Kepercayaan Terhadap Keputusan Pembelian Hebalife Mataram

The aim of this research is to examine the influence of green marketing on purchasing decisions; testing the influence of knowledge on purchasing decisions; and test the influence of trust on purchasing decisions. The method used is explanatory research using data analysis, namely regression with a confirmatory approach. From the results of regression analysis calculations using a confirmatory approach, there is a significant relationship, namely green marketing, to purchasing decisions; knowledge of purchasing decisions and confidence in purchasing decisions for purchasing Herbalife products at NC Green Army Mataram.

Accommodating and Extending Various Models for Special Effects Within the Generalized Partially Confirmatory Factor Analysis Framework.

Special measurement effects including the method and testlet effects are common issues in educational and psychological measurement. They are typically covered by various bifactor models or models for the multiple traits multiple methods (MTMM) structure for continuous data and by various testlet effect models for categorical data. However, existing models have some limitations in accommodating different type of effects. With slight modification, the generalized partially confirmatory factor analysis (GPCFA) framework can flexibly accommodate special effects for continuous and categorical cases with added benefits. Various bifactor, MTMM and testlet effect models can be linked to different variants of the revised GPCFA model. Compared to existing approaches, GPCFA offers multidimensionality for both the general and effect factors (or traits) and can address local dependence, mixed-type formats, and missingness jointly. Moreover, the partially confirmatory approach allows for regularization of the loading patterns, resulting in a simpler structure in both the general and special parts. We also provide a subroutine to compute the equivalent effect size. Simulation studies and real-data examples are used to demonstrate the performance and usefulness of the proposed approach under different situations.

Halal supply chain resilience index: development and implementation of measurement tool

PurposeThis study aims to develop a measurement model of the halal supply chain resilience (HSCRES) index, which represents the capability of the supply chain (SC) to handle disruption caused by halal risks. A case study is conducted to apply the HSCRES index in the halal chicken SC in Yogyakarta, Indonesia, to test the proposed methodology.Design/methodology/approachA literature synthesis was conducted to establish the main capability and vulnerability factors and their relevant indicators. The indicators were validated using the confirmatory factor analysis approach. Then, applying an analytical hierarchy process involving ten experts – practitioners and academicians – the weight of each indicator was obtained. A survey of 20 employees of slaughterhouses, 35 sellers and 100 consumers was conducted to obtain the value of each indicator. Finally, the HSCRES index was calculated by comparing the total weighted capability value to vulnerability.FindingsThe results revealed that the resilience of halal chicken SC in Yogyakarta is at a good level, with an index of 3.459, and “halal team” is the most significant indicator. The findings also revealed several capabilities that need improvement, including dedicated halal facilities, employees’ halal competence and halal regulation. However, the lack of a halal certification board, lack of management commitment and packaging contamination were found as vulnerability indicators that need to be reduced.Research limitations/implicationsThe case of this study is limited to the halal chicken SC in Yogyakarta, Indonesia. As a consequence, the obtained results are limited to a specific context. The application of this method to different areas and objects enables the establishment of different capability and vulnerability indicators.Practical implicationsThe halal resilience measurement model offers a comprehensive understanding of the strengths and weaknesses of the HSC. The findings can help stakeholders improve preparedness for halal risks, deal with halal risks better and recover more quickly. Measuring the HSCRES index can be particularly useful for policymakers in developing evidence-based strategies to increase HSCRES.Originality/valueThe current study is the first to define and classify the contributing halal resilience attributes and also to calculate the halal resilience index.

Sex/gender differences in general cognitive abilities: an investigation using the Leiter-3.

Research has shown that differences between males and females are not in general intelligence, but only in some specific factors and tasks. We used the Italian standardization of the Leiter-3, which is a completely nonverbal cognitive battery, to investigate the nature of sex/gender (we used sex/gender to reflect the awareness that the effects of biological 'sex' and socially constructed 'gender' cannot be easily separated and that most individuals' identities are informed by both sex and gender) differences. In doing so we used a multigroup confirmatory factor analysis approach. Results confirmed that males and females perform similarly in general intelligence, but present with some specificities. Males perform better on some, but not all, tasks requiring the spatial manipulation of the stimuli, but females consistently outperform males in tasks such as the nonverbal Stroop, requiring inhibition and attention control to a larger extent. The clinical and practical implications of our findings are considerable. The identification of specific cognitive strengths and weaknesses in males and females underscores the importance of tailored approaches in clinical assessments and interventions.

Putting the Vicious Cycle to the Test: Evidence for the Cognitive Behavioral Model of Persistent Somatic Symptoms From an Online Study.

In clinical practice, persistent somatic symptoms are regularly explained using a cognitive-behavioral model (CBM). In the CBM, predisposing, perpetuating, and precipitating factors are assumed to interact and to cause the onset and endurance of somatic symptoms. However, these models are rarely investigated in their entirety. We conducted an online survey during the COVID-19 pandemic. A total of 2114 participants from the general German population completed questionnaires that measured different factors of the CBM. We used state negative affectivity and neuroticism as predisposing factors, fear of a COVID-19 infection as the precipitating factor, and somatic symptoms, misinterpretation of bodily symptoms, attention allocation to bodily symptoms, and health anxiety as perpetuating factors. Moreover, we added safety and avoidance behavior as end points to the model. We conducted a psychological network analysis to exploratively study the relationships between the model's different factors and tested the assumptions of the CBM by evaluating a structural equation model (SEM) that incorporated all factors of the model. Network analyses revealed clustering in our data: Health anxiety and different cognitive factors are closely related, whereas somatic symptoms and state negative affectivity are strongly associated. Our SEM showed adequate fit. Our findings from an exploratory and a confirmatory approach give empirical support for the CBM, suggesting it as a suitable model to explain bodily symptoms in the general population and to possibly guide clinical practice. The network model additionally indicates the necessity to apply an individualized CBM for patients, depending on a preponderance of either persistent somatic symptoms or health concerns.

Empirical assessment of the impacts of Sino-African cross border relations in the construction industry: a Confirmatory Factor Analysis approach

PurposeIt is no news that Chinese construction companies are highly motivated to invest in Africa in terms of infrastructure and construction. This influx from the beginning of the millennium marked a game-changer for infrastructural development in most African countries. This study, therefore, explores how the partnership between China and Africa has impacted the construction industry in Africa with a focus on Nigeria.Design/methodology/approachA quantitative approach was adapted for the study, which is descriptive in nature, and the primary participants of the study were core construction professionals within the Nigerian construction industry. Data was collected via a structured questionnaire, and multivariate statistics was used to analyse the data.FindingsThe study results revealed that the benefits accrued from Chinese participation in the African construction industry can be classified into three distinct categories: socio-economic development through construction, land transportation system development and construction industry development. The study further revealed that Chinese involvement has been most beneficial to the development of the land transportation system in Nigeria with more investment in the construction and maintenance of roads and railways.Originality/valueThe study will serve as a basis for making informed future decisions on Chinese participation in the Nigerian construction industry as it exposes the impacts of the relationship within the current system. The outcome of this study can be used to refocus the partnership to ensure the optimum development of the local construction industry. The government and other relevant agencies can use the findings from this study to ensure that there is sustainable growth in the local construction industry through Chinese participation.

Accessibility and Inclusion of Students with Disabilities in University of Dhaka: Transforming the University in Line with Sustainable Development Goals

This study aimed to explore what constitutes an accessible and supportive environment for promoting inclusive education for all students with a particular focus on students with disabilities (SWDs) aligning with the plea of SDGs in the University of Dhaka. Thus, the general objective was to come up with a holistic understanding of inclusive education practices by comprehensive analysis of features related to accessibility, reasonable accommodation and Universal Design for Learning (UDL) for SWDs, also of exploring the scopes, limitations and challenges prevalent in the process. The objectives of the study required both confirmatory and exploratory approaches, thus demanding to adopt a mixed-method research approach that allowed researchers to choose a flexible ‘within- stage-mixed model design’ with emphasis on qualitative approaches of data collection and analysis. Semi-structured interview schedule as data collection instrument yielded qualitative data that was analyzed using descriptive and thematic analysis framework (Braun &amp; Clarke, 2006). The findings shed light on the existing scopes, limitations and challenges in the learning environment of the university in addressing the learning needs of SWDs. The findings also produced valuable information for transforming University of Dhaka towards a recognized disable-friendly university with an impact ranking, as well as with a QS Star University Rating on Inclusiveness. Teacher’s World: Journal of Education and Research, 49 (1), 205-225

Psychometric Evaluation of the Food Life Questionnaire-Short Form among Brazilian Adult Women.

Measures of beliefs and attitudes toward food have generally been limited to the measurement of more pathological eating attitudes (e.g., disordered eating). The Food Life Questionnaire (FLQ) and its short form (FLQ-SF) were developed to examine attitudes toward a broader range of foods; however, the factor structure of the FLQ-SF was not confirmed in any study with young women. In the present study, we performed a psychometric evaluation of the Brazilian Portuguese translation of the FLQ-SF in a sample of 604 women. We evaluated the factor structure using a two-step, split-sample exploratory and confirmatory factor analytic approach. Results supported a four-factor structure (i.e., weight concern, diet-health orientation, belief in a diet-health linkage, and food and pleasure) with 18 items (χ2/df = 2.09; CFI = 0.95; TLI = 0.94; RMSEA = 0.05 (90% CI = 0.04; 0.06; p > 0.05); and SRMR = 0.08). Additionally, we found good internal consistency for all FLQ-SF subscales (McDonald's ω = 0.79-0.89) and convergent validity with measures of feelings, beliefs, and behaviors involved in food attitudes. Collectively, these results support the use of the FLQ-SF in Brazilian women and provide a foundation to expand the literature on beliefs and attitudes toward food in this population.

An international review of the characteristics of viral nucleic acid-amplification testing (NAT) reveals a trend towards the use of smaller pool sizes and individual donation NAT.

Nucleic acid-amplification testing (NAT) is used for screening blood donations/donors for blood-borne viruses. We reviewed global viral NAT characteristics and NAT-yield confirmatory testing used by blood operators. NAT characteristics and NAT-yield confirmatory testing used during 2019 was surveyed internationally by the International Society of Blood Transfusion Working Party Transfusion-Transmitted Infectious Diseases. Reported characteristics are presented herein. NAT was mainly performed under government mandate. Human immunodeficiency virus (HIV), hepatitis C virus (HCV) and hepatitis B virus (HBV) NAT was performed on all donors and donation types, while selective testing was reported for West Nile virus, hepatitis E virus (HEV), and Zika virus. Individual donation NAT was used for HIV, HCV and HBV by ~50% of responders, while HEV was screened in mini-pools by 83% of responders performing HEV NAT. Confirmatory testing for NAT-yield samples was generally performed by NAT on a sample from the same donation or by NAT and serology on samples from the same donation and a follow-up sample. In the last decade, there has been a trend towards use of smaller pool sizes or individual donation NAT. We captured characteristics of NAT internationally in 2019 and provide insights into confirmatory testing approaches used for NAT-yields, potentially benefitting blood operators seeking to implement NAT.

The Parents’ Role in the Teaching Online Process: A Confirmatory Approach

The Parents’ Role in the Teaching Online Process: A Confirmatory Approach

A three-way confirmatory approach to formal concept analysis in classification

Formal concept analysis (FCA) has demonstrated its effectiveness in classification through various studies. A few types of FCA-based classifiers, such as rule-based, concept-cognitive-learning-based, and hypothesis-based models, have been introduced for different purposes and distinct contexts. Nevertheless, these diverse models share fundamental principles that underlie the construction of effective FCA-based classifiers. This study contributes to the field in at least two aspects. Firstly, we present a general framework of FCA-based classification by reviewing, reformulating, and generalizing the existing models. The framework consists of four essential steps: intent learning, intent grouping, rule induction, and rule application. Secondly, following the presented framework, we integrate Bayesian confirmation theory and propose a novel three-way confirmatory approach to FCA-based classification. The proposed approach provides a fresh lens of formulating, analyzing, and interpreting results from FCA-based classifiers. Moreover, this approach can also be used to re-interpret existing hypothesis-based models, potentially leading to new insights and advancements in the field. The integration of Bayesian confirmation theory enriches the theoretical foundation of FCA-based classifiers, fostering the exploration of promising avenues for future research and development.

Analysis of the Influence of Product Cost and Perceived Advertising Costs Through Digital Devices on Digital Brand Equity of American Fast-Food Products McDonalds

The purpose of this research is to demonstrate and examine how perceived advertising budget and pricing deals affect perceived quality and brand image, as well as how brand loyalty, brand awareness, and brand image are affected. Descriptive research is what this study is doing. The research approach employed by the investigators was a cross-sectional design. In this study, a questionnaire is used to collect data. This study's target demographic consists of all individuals who have visited, seen, and bought merchandise. Scientists employed judgmental sampling, a non-probability sampling method. One hundred persons made up the research sample. This study makes use of the confirmatory factor analysis approach in conjunction with the SEM data processing technology. The analysis's findings indicated that perceived advertising spending positively impacted perceived quality. Brand loyalty is positively impacted by perceived ad spend. Brand recognition is positively impacted by perceived ad spending. Brand image benefits from perceived advertising expenditure. Discounts on prices positively impact the perception of quality. Discounts have a detrimental effect on a brand's reputation. Thus, these results provide important insights for companies in designing their marketing strategies. They need to carefully consider the allocation of their promotional funds, ensuring that investment in perceived advertising spending is balanced with the benefits derived while also being mindful of the risks associated with excessive use of price deals. By understanding the relationship between these factors, companies can optimize their marketing efforts to strengthen their brand image and improve their product performance in the marketplace.