Unidimensional Construct Research Articles

The Role of Moral Disengagement in the Relationships between Ethical Ideology and Unethical Pro-Organizational Behaviour

There is growing research by a group of researcher on unethical pro-organisation behaviour (UPB) especially after the misconduct of carbon emission by Volkswagen, the researchers have trying to understand why, how and when employees would conduct UPB by using various theories (Mishra et al., 2021) including moral disengagement theory (Mishra et al., 2021). Drawing from moral disengagement theory (Bandura, 1990) we argue that moral disengagement mechanism mediates the relationships between ethical ideology and UPB. As the literature of moral disengagement in unethical behaviour and UPB heavily tested and rely on moral disengagement as unidimensional construct, so less is known which mechanisms of moral disengagement influence employees behaviour (Ogunfowora et al., 2021). So, this paper will examine how idealist and relativist adopting moral disengagement mechanisms in justifying their immoral act of UPB. The study is a cross sectional study which the data was collected through paper and pencil survey. A total of 387 responses were collected from private sectors employees in Klang Valley, Kuala Lumpur, Malaysia. The respondents received RM10 KFC voucher as a token. The data quality measures were used by including attention check questions and marker variable (Moore et al., 2021). All the responses were measured using 7-likert scale, where 1 – strongly disagree and 7-strongly agree. Employees ethical ideology was measured using 20 items by (Forsyth, 1980), moral disengagement was measured using 32 items by (Bandura, 1990), and UPB was measure using 6 items by (Umphress et al., 2010), The analysis was conducted using SPSS Version 27, and the mediation analysis was tested using PROCESS. Keywords: Unethical pro-organizational behaviour, moral disengagement, ethical ideology

Linking technology readiness and customer engagement: an AI-enabled voice assistants investigation

PurposeThis paper aims to establish and empirically investigate a research model examining the effect of four dimensions of the technology readiness index – optimism, innovativeness, discomfort and insecurity – on customer engagement that further influences purchase intention in the context of online shopping through artificial intelligence voice assistants (AI VAs).Design/methodology/approachData were collected in India from 429 customers in a self-administered online survey. Data analysis uses the structural equation modelling technique.FindingsTechnology readiness dimensions, e.g. optimism, innovativeness, discomfort and insecurity, are critical factors driving customer engagement. Customer engagement further results in purchase intention in online shopping through AI VAs.Research limitations/implicationsThis study adds to the literature by understanding how customers’ technology readiness levels drive engagement and purchase intention. However, this study includes customer engagement as a unidimensional construct. Further research can consist of customer engagement as a multidimensional construct.Practical implicationsThe findings offer guidelines for e-retailers to enhance customer engagement that matches their personality traits, thereby strengthening their purchase intention through AI VAs.Originality/valueThe research contributes to the literature by empirically investigating a research model, revealing optimism, innovativeness, discomfort and insecurity as crucial parameters for customer engagement and purchase intention.

S2-1 Physical literacy in Europe

Abstract Introduction Most approaches in health-enhancing physical activity with a focus on person-related qualities take a fragmented view on physically, active lifestyles, as they concentrate on unidimensional constructs with an isolated perspective. However, physical literacy (PL) can be described as a holistic and integrative concept that simultaneously considers physical, cognitive, and affective determinants for physical activity. The PL concept has gained momentum in recent years and its promotion has been suggested as a key mechanism within the Global Action Plan on Physical Activity 2018-2030 (World Health Organization) for the reduction of worldwide physical inactivity in the future. Presentations The present symposium starts with an introduction into the concept, including its history, philosophic underpinnings, and most important assumptions. The findings of the EUROPLIT study will frame the further course of this symposium, as this study comprehensively assessed and compared the situation of PL in research, practice, and policy across Europe. In this context, the present symposium will zoom into the specific situation of three European countries and exemplarily present studies that reflect the national developments of PL. In the first country-specific contribution, Portuguese researchers will report on the current state of PL assessments and PL interventions within their country. In the second country-specific contribution, a research team from different institutions will illustrate how the PL concept guides the design of interventions in Denmark and how these are implemented into practice and policy. In the third country-specific contribution, two Austrian researchers will describe the multi-phase development process of a PL questionnaire for adults in German language. Q&A The symposium concludes with a discussion (moderated by the two chairs) on the most relevant blind sports in research, future pathways as well as consequences for practice and policy. In summary, the symposium bridges the gap between research, practice, and policy. Therefore, it can make a major contribution to this years’ conference focus.

Sex-related differences in the associations between diurnal cortisol pattern and social and emotional loneliness in older adults.

Loneliness is a distressful feeling that can affect mental and physical health, particularly among older adults. Cortisol, the primary hormone of the Hypothalamic-Pituitary-Adrenal axis (HPA-axis), may act as a biological transducer through which loneliness affects health. While most previous studies have evaluated the association between loneliness, as a unidimensional construct, and diurnal cortisol pattern, no research has examined this relationship discriminating between social and emotional loneliness in older adults. As sex differences in the negative mental health outcomes of loneliness have been reported, we also investigated whether diurnal cortisol indices and loneliness associations occur in a sex-specific manner. We analyzed the diurnal cortisol- pattern in 142 community-dwelling, non-depressed, Caucasian older adults (55,6% female) aged 60-90. Social and emotional (family and romantic) loneliness scores were assessed using the Spanish version of the Social and Emotional Loneliness Scale for Adults (SELSA). Five salivary cortisol samples were used to capture key features of the diurnal cortisol pattern, including: awakening and bedtime cortisol levels, awakening response (CAR), post-awakening cortisol output (post-awakening cortisol [i.e., the area under the curve with reference to the ground: AUCG]), total diurnal cortisol release (AUCG), and diurnal cortisol slope (DCS). After controlling for sociodemographic variables, the hierarchical linear multiple regression analyses revealed that in male older adults, higher scores on social and family loneliness were associated with elevated awakening cortisol levels, total diurnal cortisol output, and a steeper diurnal cortisol slope (DCS). However, these associations were not observed in female older adults. In addition, feelings of romantic loneliness were positively associated with bedtime cortisol levels and AUCG in older males. Multilevel growth curve modeling showed that experiencing more social and emotional loneliness predicted higher diurnal cortisol output throughout the day in older male adults. The presence of sex differences in the relationship between cortisol indices and loneliness among older adults holds particular significance for diagnostic and screening procedures. Combining loneliness scales as screening tools with diurnal cortisol measures has the potential to be an effective and cost-efficient approach in identifying higher-risk individuals at early stages.

Initial Development of a Second Language Discussion Task-Specific Self-Efficacy Instrument: An Illustration for Frontline Researchers

Self-efficacy has emerged as a popular construct in second language research, especially in the frontline and practitioner-researcher spaces. A troubling trend in the relevant literature is that self-efficacy is often measured in a general or global manner. Such research ignores the fact that self-efficacy is a smaller context-driven construct that should be measured within a specific task or activity where time, place, and purpose domains are considered in the creation of the measurement. Task-based language teaching researchers have also largely neglected the affective factors that may influence task participation, including self-efficacy, despite its potential application to understanding task performance. In this report, we present an instrument specifically developed to measure English as a foreign language students’ self-efficacy beliefs when performing a dialogic, synchronous, quasi-formal group discussion task. The instrument's underlying psychometric properties were assessed ( N = 130; multisite sample from Japanese universities) and evidence suggested that it could measure a unidimensional construct with high reliability. The aggregate scale constructed from the instrument's items also displayed a central tendency and normal unimodal distribution. This was a positive finding and suggested that the instrument could be useful in producing a self-efficacy measurement for use in the testing designs preferred by second language researchers. The potential applications of this instrument are discussed while highlighting how this report acts as an illustration for investigators to use when researching self-efficacy.

Considering a Bifactor Model of Children’s Subjective Well-Being Using a Multinational Sample

In the current study, we consider the viability of a bifactor model of children’s subjective well-being (SWB) by contributing to the discussion on the dimensionality of children’s SWB. We specify a general factor of SWB and four group factors (context-free cognitive life satisfaction, domain-based cognitive life satisfaction, positive affect, and negative affect) using structural equation modelling and parceling. We used data from the Children’s Worlds International Survey of Children’s Well-Being (N = 92 782). Our analysis strategy included confirmatory factor analysis and bifactor analysis. We found a good fit for the specified bifactor model, with all items loading onto a general factor and group factors. For the bifactor analysis, after controlling for the general factor, the loadings on the group factors were substantially lower, and did not meet the criteria of acceptability for bifactor indices thresholds. The common variance of the items is largely explained by the general factor; thus, the specification of the group factors cannot be justified. Further, we found an excellent fit for a model using the parceling approach. From a measurement perspective, the construct of children’s SWB can potentially be measured as a unidimensional construct. Thus, it may be feasible to report a total score for children’s SWB, as opposed to scores on the individual subscales (group factors). Applied researchers can thus confidently use SWB as a unidimensional construct or follow the parceling approach in the structural equation model context.

The conductor matters: the impact of purchasing orchestration on organizational performance

Purpose Organizations increasingly manage innovation projects jointly with suppliers to use external resources to fill internal competencies. However, little is known about the practices of how companies configure internal and external resources to enhance competitiveness. Drawing on resource orchestration theory, this study aims to propose a novel approach to explain organizational performance using purchasing orchestration (PO) as an antecedent. The paper then tests an empirical model to assess the impact of PO practices on innovation and financial performance. Design/methodology/approach Cross-sectional survey data from 247 supply chain managers are used to test hypotheses relating PO to performance. SPSS PROCESS is applied to test conditional direct and indirect effects. Findings The positive impact of PO practices on innovation and financial performance is confirmed. Results indicate an organization’s entrepreneurial orientation (EO) can strengthen the positive relationship between PO and financial performance. Structuring, bundling and leveraging external resources are introduced as new organizational capabilities. Research limitations/implications This research is based on cross-sectional data, and unidimensional constructs are used. Practical implications This research guides managers on the innovation process in light of the growing importance of external resources. The manuscript highlights the role of strategic purchasing in establishing new resource capabilities as a competitive advantage. Originality/value This research provides new insights into the relationship between purchasing practices and organizational performance and helps better understand the implications of orchestrating supply chain resources. A novel construct, PO, is introduced as a theoretical basis for studying supply chain-enabled innovation.

Distinguishing the determinants of low-cost and high-cost sustainable travel behaviors

PurposeMost research on sustainable tourism has been devoted to understanding the determinants of tourists' sustainable behavior on a unidimensional construct, overlooking the importance of behavioral costs in sustainable travel behavior. To shed light on this issue, this study aims to quantitatively differentiate sustainable travel behaviors based on behavioral costs and to examine the impact of psychological factors on both low-cost and high-cost sustainable travel behaviors.Design/methodology/approachA survey of 470 tourists used Rasch analysis to measure the behavioral costs associated with sustainable travel behavior and partial least squares structural equation modeling (PLS-SEM) to test hypotheses.FindingsThe results indicate that the value-identity-personal norm model explains more variance in low-cost sustainable travel behaviors than in high-cost sustainable travel behaviors. This supports the central tenet of the low-cost hypothesis and also suggests that values and self-identity factors have a stronger influence on low-cost sustainable travel behavior. However, personal norms have a stronger influence on high-cost behaviors.Practical implicationsThis research highlights the importance for tourism and destination managers to distinguish between different categories of sustainable travel behavior and to analyze their determinants separately. This allows for the development of tailored messages for specific groups of tourists based on the psychological drivers of sustainable travel behavior.Originality/valueThis study provides insights into the determinants of sustainable travel behaviors with different behavioral costs and highlights the importance of analyzing different categories of behaviors separately.

Psychometric validation of the Cognitive Abilities Screening Instrument using Rasch analysis in people with dementia.

This study aimed to examine unidimensionality of the Cognitive Abilities Screening Instrument (CASI) using Rasch analysis and estimate Rasch person reliability in people with dementia. CASI data of people with dementia was collected from medical records of one general hospital in northern Taiwan. A total of 506 people with dementia were recruited from the Department of Neurology. The confirmatory factor analysis was first conducted to verify the fitness of one-factor model of the CASI. Unidimensionality was confirmed through 2 assumptions: the infit and outfit mean square were 0.5 to 1.5, and residual variance of the first principal component in principal component analysis was ≤20%. Rasch person reliability was estimated after undimensionality was supported. The results of one-factor model had shown that the Comparative Fit Index = 0.99, Tucker Lewis Index = 0.99, Root Means Square Error of Approximation = 0.015, and Standardized Root Mean Square Residual = 0.067, representing a good fit to the model. Both the infit and outfit mean square were ranged 0.87 to 1.37 and 0.86 to 1.42, respectively, and low residual variance of the first principal component (12.3%). Rasch person reliability result of 0.58 was satisfactory. The person-item map indicated the difference between item difficulty and person ability was within the acceptable limits (0.22 logits). Differential Item Function was found between -0.48 to 0.44 logits for gender, indicating the CASI functioned similarly for both genders. The 46 items of the CASI showed a unidimensional construct. The CASI had been demonstrated as a valid and reliable screening tool for assessing overall cognitive function in people with dementia, capturing their cognitive functions effectively.

Development and psychometric properties of the Student Evaluation of Dissertation Tutoring Scale (SEIDTUS) in Higher Education

Academic dissertation tutoring has become an important academic teaching competence in higher education. However, no assessment instrument has been developed to measure the needed transversal competences in quality tutoring. In two studies, we aim to develop and explore the psychometric properties of the Student Evaluation of Dissertation Tutoring Scale (SEDITUS). In study 1 (N = 82, 72% women), the initial 8 items proposed a unidimensional construct and good fit properties to the Polytomous Rasch model. Differential item functioning (DIF) revealed no significant differences across gender for all the items, and the 4-category structure did function well. In study 2 (N = 1046, 69, 03% women) an expert committee decided to remove 1 item due to lack of generalization process of the item across faculty degrees. A multilevel Rasch model was used to consider the nested nature of the data (students nested in 8 faculties). Results replicated Study 1, with the scale showing appropriate psychometric properties at the item and global level. Overall, the 2 studies suggest the SEDITUS can be recommended as a rapid assessment of tutoring process in dissertations developed both in undergraduate and masters’ degrees.

Uncovering the dimensionality of authorial voice in the integrated writing task: A confirmatory factor analysis study

Research has long noted the importance of establishing an authorial voice as a hallmark of academic writing. However, despite purported connections between academic writing and integrated writing tasks (Gebril & Plakans, 2014; Huang & Hung, 2013), little attention has been paid to examine the role and effect of authorial voice on writing quality in a test task that involves use of source texts. The primary intent of this study is to shed light on the internal structure of authorial voice in an integrated reading-to-write task by way of Confirmatory Factor Analysis (CFA). The participants of this study included 315 Chinese college-level EFL students who wrote for a task addressing the topic of “eating for professional situations”. Based on an analytic rubric developed by the researchers with indicators informed by Hyland's (2005) interactional framework of authorial voice, the collected essays were rated on a scale of 1–5 based on the quality as it pertains to each of the indicators under the rubric. The results of a model comparison approach to CFA suggested that the current data are best characterized as a unidimensional construct; it represents one single factor. Furthermore, the Structural Equation Modeling (SEM) analysis indicated verbatim source use is inversely associated with quality of authorial voice, corroborating our hypothesis that improper source copying negatively influences the rater's perception of a test-taker's authorial voice. Practical implications regarding rubric use and instruction are discussed.

Development and Validation of the Sexual Minority and Religious Identity Integration (SMRII) Scale

ABSTRACT Despite the psychosocial strain of homonegative religious attitudes, many people with minoritized sexual identities also hold religious identities and benefit from integrating their sexual minority and religious identities. However, for research and clinical practice to advance, a reliable and valid measure of sexual and religious identity integration is needed. The present study reports on the development and validation of the Sexual Minority and Religious Identity Integration (SMRII) Scale. Participants were comprised of two subsamples for whom sexual and religious identity is particularly salient (Latter-day Saints and Muslims) as well as a third subsample of the general sexual minority population—totaling 1,424 individuals (39% POC, 62% cisman, 27% ciswoman, 11% trans/non-binary/genderqueer). Exploratory and confirmatory factor analyses indicated that the 5-item scale measures a single unidimensional construct. This scale demonstrated good internal consistency in the total sample (α = .80) as well as metric and scalar invariance along relevant demographics. The SMRII also evidenced strong convergent and discriminant validity, significantly correlating with other measures of religious and sexual minority identity typically between r = .2 and r = .5. Taken together, initial findings indicate that the SMRII is a psychometrically sound measure that is brief enough to be utilized in research and clinical settings. Public Significance Statement: This article introduces the Sexual Minority and Religious Identity Integration Scale (SMRII) as a reliable and valid assessment of the degree to which individuals integrate their sexual minority and religious identities. This five-item measure is brief enough to be utilized in both research and clinical settings.

Measuring problematic sexual behaviour: an item response theory examination of the Bergen–Yale sex addiction scale

ABSTRACT Background and aims Previous research investigated the prevalence and risk factors of problematic sexual behaviour (PSB) using the Bergen–Yale Sex Addiction Scale (BYSAS), among other instruments. However, a dearth of literature employed item response theory (IRT) to assess the BYSAS psychometric properties. The present study adopts an IRT framework to comprehensively examine the measurement aspects (including discrimination and severity) and the prevalence of PSB among a relatively large adult sample. Methods Participants (N = 968, 64.3% men, Mage = 29.5 years, age range = 18–64 years) completed the BYSAS. Results CFA determined that the BYSAS is a unidimensional construct. Additionally, IRT analysis showed variability in discrimination, severity, and reliability across BYSAS items, with a raw score exceeding 20, indicating a high risk of PSB. Accordingly, using this raw score 1.8% of the participants were at-risk of PSB. Conclusions Findings supported the differential use of BYSAS criteria for assessment purposes, while only a minority of participants presented to be at risk of problematic sexual behaviour difficulties.

Free to be me with you: Development of the Individuality in Couples Questionnaire.

Despite multiple theories and treatment modalities emphasizing the importance of individuality in couple relationships, the field is lacking a reliable and valid measure of this construct. In the present study, we developed the Individuality in Couples (ICQ) questionnaire and demonstrated its strong psychometric properties across two samples of participants in committed intimate relationships (Sample 1 = 580 undergraduates; Sample 2 = 445 community members). The ICQ is comprised of 25 items that can be combined into a reliable total score to measure individuality in the context of couple relationships (i.e., the extent to which someone feels respected by their partner for their individuality and experiences personal autonomy in the relationship). Scores on the ICQ demonstrated high internal consistency, excellent construct replicability, convergent and divergent validity with measures of other relationship dimensions (i.e., intimacy, support, sexual satisfaction, psychological aggression, communication), criterion validity with measures of relationship satisfaction and partner health, and incremental predictive validity for explaining relationship satisfaction and partner well-being when controlling for other relationship dimensions. Results suggest that individuality in couples is largely a unidimensional construct that is distinct from more severe patterns of control and coercion characteristic of psychological aggression. The ICQ holds promise for identifying and promoting dynamics essential for healthy couple relationships. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Psychometric examination of the Malay version of the Pain Catastrophising Scale in a Malaysian chronic pain sample

Introduction: The purpose of this study was to examine the psychometric properties of the Malay version of the Pain Catastrophizing Scale (PCS-M). Methods: The original PCS was translated into Malay using the back-translation method and was administered to 132 outpatients with non-malignant chronic pain. Results: Confirmatory factor analysis revealed that a 10-item single-factor model had a better fit profile compared to 8 competing models as documented in previous studies. In terms of internal consistency, Cronbach’s α value for the PCS-M was 0.93. In terms of predictive validity, the PCS-M explained 47%, 24%, and 22% of the variance in anxiety, depression, and kinesiophobia, respectively. Conclusion: Best presented as a unidimensional construct, the 10-item PCS-M demonstrated excellent reliability estimate and initial evidence for predictive validity in a Malaysian chronic pain sample. The 10-item PCS-M is a reliable and valid tool to be used in chronic pain management in the Malaysian context.

The Machiavellian bully revisited: A closer look at differences and processes of Machiavellian bullying and cyberbullying perpetration.

Numerous studies on personality traits conducive to traditional bullying and cyberbullying mentioned Machiavellianism as an influential predictor of these behaviors. Machiavellianism comprises manipulative, egotistic orientations that help acquire desired outcomes. However, it is questionable whether bullying and cyberbullying reflect unidimensional constructs since they are frequently categorized into verbal, relational, and physical aspects (with the latter being applicable only in traditional bullying). Similarly, evidence suggests that Machiavellianism is not a uniform trait. In this research, using a sample of 634 students (339 girls; 54%) from 40 classes from eighth to tenth grades, a five-dimensional measure of bullying and cyberbullying was devised and suggested that aspects of (cyber)bullying are related but still separable. Subsequently, differential relations between the five forms of (cyber)bullying and two facets of Machiavellianism were modeled. Those facets were Machiavellian approach (i.e., manipulative aspects of Machiavellianism) and Machiavellian avoidance (i.e., distrustful aspects of Machiavellianism). Multilevel models revealed that Machiavellian approach predicted relational bullying (but not relational cyberbullying) and Machiavellian avoidance predicted verbal (cyber)bullying and physical bullying. All links were mediated by overt dehumanization, that is, the tendency to cognitively deprive a person of typically human characteristics.

Going the extra mile (or not): Facets of narcissism and organizational citizenship behavior

Narcissism is widely considered to be an important predictor of organizational citizenship behavior (OCB), but there is ambiguity regarding the nature of this relationship. This is likely because existing studies focused on narcissism as a unidimensional construct, thereby neglecting its multifaceted structure. Using data from a diverse sample of 504 employees and a workplace-specific (i.e., contextualized) measure of narcissism, the present study aimed to clarify the associations between different facets of narcissism and OCB. The results of structural equation modeling showed that claim to leadership was positively related to OCB, whereas need for authority was negatively related to it. Sense of superiority was negatively related to OCB towards individuals but was unrelated to OCB towards the organization. Finally, appetite for risk and belief in persuasive power were both unrelated to OCB. Results highlight the importance of considering multiple narcissism facets in relation to work-related outcomes.

Components of a Successful Classroom: A Factor Analysis for Initial Validation of a Measure Assessing Tier 1 Classroom Management

The literature has identified the use of data-based, problem-solving as an essential element in the promotion of positive behavior interventions and supports (PBIS) within the classroom. The Components of a Successful Classroom (CSC) tool is an instrument which has undergone initial validation to support its use for measuring critical features of Tier 1. This study provides initial support for the validation of this classroom management observation tool as part of a problem-solving consultation framework by examining the extent to which items on the CSC tool sample the constructs of interest in classroom management. Behavioral consultants utilized the tool to evaluate Tier 1 behavior management strategies implemented by teachers in the classroom. An exploratory factor analysis (EFA) was conducted to determine factor structure of the classroom management observation tool. Findings of the EFA supported a unidimensional construct best measured with three factors (i.e., preventive supports, feedback provision and engagement, and expectations and consequences). Currently, this tool may be useful to practitioners by guiding general education consultation after identifying main concerns in teacher’s implementation of Tier 1 supports and supporting implementation of PBIS practices in the classroom.

Teachers’ self-efficacy in teaching mathematics: tracing possible changes from teacher education to professional practice

ABSTRACT This article reports on a cross-sectional study tracing possible changes in primary teachers’ self-efficacy in teaching mathematics across various points in their professional careers, involving both novice and experienced pre-service teachers (PSTs) and in-service teachers (ISTs). In the relevant literature, self-efficacy appears to be operationalised differently for PSTs and ISTs. Here, we conceptualise it as a unidimensional construct when measuring the future-oriented beliefs teachers hold regarding their own ability to explain mathematics to others, with a focus on understanding the underlying mathematical concepts and procedures. To measure teacher self-efficacy, we used a previously developed and validated 20-item instrument. Participants included novice PSTs (n = 191), experienced PSTs (n = 130), novice ISTs (n = 119) and experienced ISTs (n = 194). Rasch analysis enabled a comparison of the results from the four groups, confirming the theory-based expectation that self-efficacy in teaching mathematics develops with experience. The article concludes with a discussion of the implications of our work, as well as directions for further research. For example, future studies could shed light on the conditions under which the development of self-efficacy can be supported more effectively at different transition points of mathematics teachers’ professional careers.

Pedi-IKDC exhibits questionable measurement properties in a cohort of pediatric patients with ACL rupture.

Pedi-IKDC is commonly used to evaluate anterior cruciate ligament (ACL) deficiency in children. However, its construct validity has not been thoroughly assessed. The aim was to examine the measurement properties of the Pediatric International Knee Documentation Committee (Pedi-IKDC) by modern test theory (MTT) models, confirmatory factor analysis (CFA), and item response theory (IRT). The cohort consisted of all children and adolescents in Denmark (n = 535, age 9-16) treated with physeal-sparing ACL reconstruction 2011-2020. Patient-reported outcome measure (PROM) data were collected before surgery and at 1 year follow-up. Structural validity of Pedi-IKDC was assessed with MTT models. Reliability was reported as McDonalds coefficient omega. Responsiveness was evaluated with standardized response means. Sufficient PROM data were available for 372 patients. The original unidimensional construct did not fit CFA model expectations neither before surgery (χ2 = 462.0, df = 163, p < 0.0001; RMSEA: 0.109, CFI: 0.910, TFI: 0.895) nor at follow-up. Neither did a two-factor CFA model with "Symptoms" and "Sports activities" as individual subscales (χ2 = 455.6, df = 162, p < 0.0001) nor a bifactor model (χ2 = 338.9, df = 143, p < 0.0001), although fit indices improved with the latter (RMSEA: 0.094, CFI: 0.941, TFI: 0.922). The IRT models confirmed this pattern. The scale was responsive (SRM 1.66 (95% CI: 1.46-1.88)). Coefficient omega values were 0.866 before surgery and 0.919 at follow-up. The Pedi-IKDC exhibited inadequate structural validity. Neither the original construct, a two-factor model, nor bifactor models fitted data well. We advise that data obtained by Pedi-IKDC are interpreted with caution.