Methods in Sales Research: A Psychometric Evaluation of the ADAPTS Scale: A Critique and Recommendations

This study outlines a method for improving the psychometric properties of the ADAPTS scale for measuring adaptive selling (Spiro and Weitz 1990). As originally presented, the ADAPTS scale suffered from a lack of unidimensionality. Subsequent research has demonstrated mixed results when using ADAPTS as a predictor of salesperson performance. Results from this study suggest that ADAPTS can be improved by addressing the unidimensionality issue. To do this, a series of confirmatory factor models are presented, resulting in a two-factor adaptive selling model. The two adaptive selling constructs, beliefs and behaviors, are psychometrically evaluated, concluding with tests of the predictive validity of the two-factor model using self-reported performance as the exogenous latent variable.     

Preliminary analysis of the psychometric properties of Ryff's scales of psychological well-being in Portuguese adolescents

This article presents a set of research studies that aim to adapt Carol Ryff's scales of psychological wellbeing (SPWB) and to analyze its psychometric properties in adolescents. The first two studies focused on the reliability and factorial validity of different Portuguese short versions of SPWB, revealing measurement models inadequacies and low internal consistency. In the third study we developed a shortened version (30 items), taking into account the application of psychometric criteria suggested by van Dierendonck (2005). The scales of this version revealed better reliability and adequate goodness of fit indices for the six-factor model, as proposed by Carol Ryff's PWB theory. Although further research focused on the psychometrical properties reanalysis of this shortened version of SPWB is needed, this article provides a contribution to the research and intervention on positive mental health during adolescence.     

Validation française de l’Inventaire d’Attitudes Environnementales

IntroductionClimate change has made it necessary to develop valid tools for studying pro-environmental behaviors.ObjectivesThe present study assessed the validity of the French translation of the brief version of Milfont and Duckitt's (2010) Environmental Attitudes Inventory. We chose this scale for its psychometric properties, its ability to predict behaviors, its theoretical foundations, and its use in many countries. In addition to the translation, we tested a shortened, 12-item version of the scale.MethodThree samples were used to study the structure of the IAE, its nomological network, its test–retest fidelity, and its predictive validity.ResultsIAE-24 has similar psychometric properties to the original version, for both one-factor and two-factor models (preservation and utilization dimensions). IAE-12 has satisfactory internal consistency if the one-factor model is used. The nomological network of IAE-24 is not totally identical to the original version. Differences can be ascribed to inconsistencies in the literature and the use of different scales. Both IAE-24 and IAE-12 have very satisfactory predictive validity and test–retest reliability.ConclusionThe French version of the IAE has satisfactory psychometric properties.     

The Loneliness Questionnaire-Short Version: an evaluation of reverse-worded and non-reverse-worded items via item response theory

Although reverse-worded items have often been incorporated in scale construction to minimize the effects of acquiescent reporting biases, some researchers have more recently begun questioning this approach and wondering whether the advantages associated with incorporating reverse-worded items is worth the complexities that they bring to measures (e.g., Brown, 2003 ; Marsh, 1996 ). In this study, we used item response theory (IRT) to determine whether there is statistical justification to eliminate the reverse-worded items (e.g., "I have lots of friends") from the Loneliness Questionnaire (LQ; Asher, Hymel, & Renshaw, 1984) and retain only the non-reverse-worded items (e.g., "I'm lonely") to inform the provision of a shortened LQ version. Using a large sample of children (Grades 2-7; n = 6,784) and adolescents (Grades 8-12; n = 4,941), we examined the psychometric properties of the 24-item LQ and found support for retaining the 9 non-reverse-worded LQ items to make up a shortened measure of loneliness in youth. We found that the non-reverse-worded items were associated with superior psychometric properties relative to the reverse-worded items with respect to reliability and IRT parameters (e.g., discrimination and item information). A 3-point Likert-type scale was also found to be more suitable for measuring loneliness across both children and adolescents compared to the original 5-point scale. The relative contributions of reverse-worded and non-reverse-worded items in scale development for youth instruments are also discussed.     

The Spanish validation of level of expressed emotion scale for relatives of people with eating disorders

Expressed emotion (EE) is considered a general predictor of poor outcome across a range of conditions, including eating disorders, and is valuable in measuring the effect of family interventions. There are no self-report questionnaires validated in Spanish to measure EE among relatives of patients with a psychiatric condition. The aim of this study was to examine the psychometric properties of the Spanish version of the Level of Expressed Emotion scale (LEE) among relatives of eating disorder patients. A cross-sectional study of 270 relatives of patients with an eating disorder was conducted to examine the factor structure, reliability and validity of the LEE scale. Results indicated that the LEE-S (Spanish version) did not correspond to the a priori subscales described in the original version. The refined 45-item LEE-S scale consisted of four factors which explained 25.5% of variance in EE for relatives. Reliability was acceptable (alpha ranged from .73 to .86). The discriminant validity of the subscales was moderately supported by correlations with psychological distress (GHQ-12; rho = .34) and specific caregiving experience (EDSIS; rho = .39). The LEE-S instrument has adequate psychometric properties and may be of value to assess families at risk of a negative emotional climate at home.     

Psychometric Analysis and Tentative Shortening of Survey of Personal Beliefs

The Survey of Personal Beliefs (SPB) is a frequently used measure of irrational beliefs, but can display less than ideal psychometric properties. In the first study of the present project, the five subscales of the SPB correlated as expected with higher levels of perfectionism, shame, and guilt. A confirmatory factor analysis, nevertheless, revealed that these subscales did not adequately describe responding on the SPB, and internal reliability for some subscales was poor. An abbreviated 12-item version of the SPB was more reliable than the subscales and generally as valid as the full 50-item instrument. With a second data set, the shortened version of the SPB was more consistent than the full 50-item scale in correlating positively with at least some measures of maladjustment that included depression, anxiety, neuroticism, and alexithymia. Future researchers may want to utilize the shorter 12-item version of the SPB as a more convenient and psychometrically acceptable measure of irrational beliefs.     

The liebowitz social anxiety scale as a self-report instrument: a preliminary psychometric analysis

The Liebowitz social anxiety scale (LSAS) is a commonly used clinician-administered instrument. The present study reports on the properties of a self-report version of the LSAS (LSAS-SR). About 175 participants diagnosed with social phobia participated in the study. The LSAS-SR showed overall good psychometric properties as indicated by the results of test-retest reliability, internal consistency, and convergent and discriminant validity. Furthermore, the scale was sensitive to treatment change. The construct validity of the LSAS-SR, however, remains to be further explored. These findings support the utility of the LSAS-SR, which has the advantage of saving valuable clinician time compared to the clinician-administered version.     

Validation of the French version of Brandtstädter and Renner's Tenacious Goal Pursuit (TGP) and Flexible Goal Adjustment (FGA) scales

IntroductionDespite the potential usefulness of the TGP/FGA scales (Brandtstädter and Renner, 1990) for studying the way people adapt with age, there is little psychometric evidence supporting the validity of the construct of either scale.ObjectiveThe aim of the study was to develop a French version of Brandtstädter's TGP/FGA scales in order to provide a self-report measure for French people in the field of gerontology.MethodTwo studies involving 677 participants were conducted to evaluate the construct validity, reliability and convergence validity of these scales.ResultsIn accordance with Brandtstädter, two factors emerged from the exploratory factorial analysis (study 1): tenacious goal pursuit and flexible goal adjustment. However, 10 items were removed because of factorial loadings. A confirmatory factor analysis (study 2) of the 20 remaining items corroborated a two-factor uncorrelated model of the TGP/FGA scales. The simplified subscales showed good internal consistency. As expected, higher scores on the TGP/FGA scales were correlated with good life satisfaction, greater control and less depression. Finally, the TGP scale was negatively related to age, but the FGA was not.ConclusionThe French adaptation of the TGP/FGA scales was shown to possess satisfactory psychometric properties and may therefore be a valuable instrument for researchers and clinicians who are interested in exploring adaptive processes in the maintenance and promotion of personal well-being.     

Exploratory factor analysis and psychometric properties of the Valencia Scale on attitudes and beliefs toward hypnosis

Exploratory factor analysis and psychometric properties of the valencia scale on attitudes and beliefs toward hypnosis. Therapist version. This investigation examines the psychometric properties and factor structure of the Valencia Scale on Attitudes and Beliefs toward Hypnosis-Therapist version. Data from 775 professional psychologists belonging to the Spanish Association of Psychologists were used for the exploratory factor analysis (EFA). Retest included data from 426 participants who answered to the test. The EFA revealed eight factors (Fear, Memory, Help, Control, Collaboration, Interest, Magic and Marginal). Each factor showed good internal consistency and reliability, similar to the client version of this scale. ANOVA indicate that some variables (having scientific knowledge, having received practical information on hypnosis, to use hypnosis, and to show interest in receiving more theoretical and practical information on hypnosis), tend to reduce inadequate beliefs and negative attitudes toward hypnosis. Our results provide the basis for carrying out confirmatory factor analysis and studies of convergent validity on the scale, and of the sensitivity of the scale to change.     

The Self-Consciousness Scale: A Revised Version for Use with General Populations1

Recent research suggests that some of the wording of the original Self-Consciousness Scale is too abstract for easy understanding by research participants who are not college students. This article presents a revised version of that scale, along with information regarding its psychometric properties. In general, the psychometric properties of the revised scale compare quite favorably to those of the original scale. It is suggested that the revised Self-Consciousness Scale be used whenever data are collected from populations other than college students.     

Psychometric Properties of a Spanish Translation of the Revised Child Anxiety and Depression Scale – Parent Version

The Revised Child Anxiety and Depression Scale – Parent Version (RCADS-P) is a parent-report questionnaire that assesses dimensions of DSM anxiety and depressive disorders in youths. Previous studies have found that the RCADS-P possesses clinical utility and strong psychometric properties in both clinic- and school-based populations. To increase applicability of the measure to a greater proportion of the individuals accessing mental health services, the present study sought to develop and examine the psychometric properties of a Spanish version of the RCADS-P. As completed by parents of 85 publicly referred children and adolescents, the RCADS-P demonstrated good internal consistency and convergent, discriminant, and divergent validity. Confirmatory factor analysis also supported a six-factor model consistent with the measure’s six subscales: separation anxiety disorder, social phobia, generalized anxiety disorder, panic disorder, obsessive-compulsive disorder, and major depressive disorder. A secondary aim of this study was to evaluate the validity and reliability of a shortened, 25-item version of the Spanish translation of the RCADS-P, which also evidenced favorable psychometric properties. Findings provide support for the Spanish version of the RCADS-P as an efficient and informative parent-report measure of youths' internalizing behaviors.     

Translation and Standardization of the Sex-Role Egalitarianism Scale (SRES-B) on a German Sample

This study presents a German-language version of the sex-role egalitarianism scale (SRES-B) L. A. King, & D. W. King, 1993]. The SRES measures a person’s attitude toward egalitarianism between women and men. It has been normed on different populations, but there was no German version of the scale. The purpose of the present study was to translate and assess the psychometric properties of the SRES-B on a German population (n=379). As expected, sex, age, and educational level affected the scores of individuals on the scale. The results of factor analyses of the domain scores and correlations of subscales demonstrate a unidimensionality of the construct. The quality of the psychometric properties of items and scale was satisfactory. Implications and future directions for research are discussed.The research was conducted as part of the author’s master thesis, while at the University of Osnabrueck, Germany.     

Évaluer les processus de l’identité vocationnelle de l’adolescence à l’entrée dans l’âge adulte : validation française du « Vocational Identity Status Assessment » (VISA)

IntroductionVocational identity construction is a core developmental task from adolescence to emerging adulthood. It is based on six processes assessed by a self-report scale, the “Vocational Identity Status Assessment” (VISA) designed in English by Porfeli et al. (2011).ObjectiveThe aim of the current study was to validate a French version of the VISA both for research considerations and applications to help in adapting individual assistance and counseling to adolescent and emerging adult students.MethodParticipants were 1655 French adolescent and emerging adult students. The identity processes were assessed by three scales: the VISA, the DIDS and the U-MICS.ResultsThe statistical analyses we performed allowed to test the psychometric properties of the VISA and to identify six vocational identity statuses previously defined in the literature. Moreover, the presentation of two individual profiles illustrated the opportunities for application.ConclusionThe VISA is a self-report questionnaire with good psychometric properties, and useful for the identification of the processes involved in the vocational identity construction.     

Parents' description of conduct problems in their children - a test of the Eyberg Child Behavior Inventory (ECBI) in a Swedish sample aged 3-10

The Eyberg Child Behavior Inventory (ECBI) is a widely used 36-item uni-dimensional parent rating scale constructed to measure disruptive behavior problems in children. However, in an American sample a 22-item version, including three subscales, has been suggested in order to increase the usefulness of the ECBI. Two studies were conducted to test the ECBI in a Swedish sample (N = 841). The aims of Study I were (a) examine the psychometric properties of the ECBI (b) to investigate the correspondence between mothers' and fathers' ratings, and (c) to obtain Swedish norms. The aim of Study II was to test the suggested three-factor solution in the Swedish sample using a confirmatory factor analysis (CFA). The ECBI showed good psychometric properties also in the present study, and Swedish normative data is presented. The best-fitting CFA-model was identical to the previously suggested three-factor model, which thus might be a useful alternative to the 36-item version.     

Development of an abbreviated Personal Globe Inventory using item response theory: The PGI-Short

The responses of 2813 individuals to the Personal Globe Inventory (Tracey, 2002) were examined with the goal of developing a shorter, yet valid version of the scale using item response theory to guide the process. A random sample of 1000 individuals was used to select the best items and then the remaining 1813 were used as a validation sample to examine psychometric properties. For items to be included in the shortened form, the option characteristic curves had to conform to theory and there could be no presence of differential item functioning across either gender or ethnicity. The best 80 items were retained forming the PGI-Short. This instrument demonstrated excellent reliability and adherence to a circular model, there was no differential item functioning across either gender or ethnicity. The PGI-Short was supported as an alternative to the fuller version of the PGI.     

Psychometric properties of the Multidimensional Anxiety Scale for Children (MASC) among Icelandic schoolchildren

A psychometric assessment of the Icelandic version of the Multidimensional Anxiety Scale for Children (MASC) was undertaken among Icelandic schoolchildren, between 10 and 15 years of age. In a first study 625 children between 10 and 15 years of age filled in the MASC. A confirmatory factor analysis indicated that the four-factor structure of the instrument was justified. Further, means and standard deviations of the total scale and the subscales were similar to the original normative data reported by March (1997). In a second study the MASC, the Children Depression Inventory (CDI) and the Revised Children's Manifest Anxiety Scale (RCMAS) were administered to a sample of 249 schoolchildren between 10 and 15 years of age. The results supported the convergent and divergent validity of the MASC. Together the two studies show satisfactory psychometric properties of the Icelandic version of the MASC in a normal population.     

Actively open-minded thinking: development of a shortened scale and disentangling attitudes towards knowledge and people

Actively open-minded thinking (AOT) is often used as a proxy for reflective thinking in research on reasoning and related fields. It is associated with less biased reasoning in many types of tasks. However, few studies have examined its psychometric properties and criterion validity. We developed a shortened, 17-item version of the AOT for quicker administration. AOT17 is highly correlated with the original 41-item scale and has highly similar relationships to other thinking dispositions, social competence and supernatural beliefs. Our analyses revealed that the AOT is not a unitary construct, but comprises four distinct dimensions, some of which concern attitudes towards knowledge, and others concern attitudes towards people. This factor structure was replicated in another data-set, and correlations with other measures in four data-sets (total N = 3345) support the criterion validity of these dimensions. Different dimensions were responsible for the AOT's relationships with other thinking dispositions.     

The psychometric properties of The Religious Status Inventory—‘Being Ethical’ subscale among Northern Irish adolescents

There are few self‐report measures of morality. The Religious Status Inventory—‘Being Ethical’ subscale represents one approach. However, at present there is limited information on the psychometric properties of either the original 20‐item version (RSInv‐20) or the shortened embedded 10‐item version (RSInv‐S10). The aim of the present study was to provide psychometric data on the internal reliability of these two versions of the ‘Being Ethical’ subscale. As part of a larger study, 595 Northern Irish adolescents, drawn from both Grammar and Secondary schools, completed the RSInv‐20. An unsatisfactory level of internal reliability was found for the RSInv‐20 (Cronbach’s alpha = 0.42), but a satisfactory level of internal reliability was found for the RSInv‐S10 (Cronbach’s alpha = 0.70). Subsequent item analysis produced an alternative 10‐item version (RSInv‐A10) that provided the optimum level of internal reliability for a 10‐item measure in the present sample (Cronbach’s alpha = 0.74). In addition, on all three versions of the measure (RSInv‐20, RSInv‐S10, and RSInv‐A10), differences were found in levels of internal reliability among Grammar and Secondary school respondents, with the former producing higher levels of internal reliability.