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A quantitative test of the cultural theory of risk perceptions: comparison with the psychometric paradigm.

This paper seeks to compare two frameworks which have been proposed to explain risk perceptions, namely, cultural theory and the psychometric paradigm. A structured questionnaire which incorporated elements from both approaches was administered to 129 residents of Norwich, England. The qualitative risk characteristics generated by the psychometric paradigm explained a far greater proportion of the variance in risk perceptions than cultural biases, though it should be borne in mind that the qualitative characteristics refer directly to risks whereas cultural biases are much more distant variables. Correlations between cultural biases and risk perceptions were very low, but the key point was that each cultural bias was associated with concern about distinct types of risks and that the pattern of responses was compatible with that predicted by cultural theory. The cultural approach also provided indicators for underlying beliefs regarding trust and the environment; beliefs which were consistent within each world view but divergent between them. An important drawback, however, was that the psychometric questionnaire could only allocate 32% of the respondents unequivocally to one of the four cultural types. The rest of the sample expressed several cultural biases simultaneously, or none at all. Cultural biases are therefore probably best interpreted as four extreme world views, and a mixture of qualitative and quantitative research methodologies would generate better insights into who might defend these views in what circumstances, whether there are only four mutually exclusive world views or not, and how these views are related to patterns of social solidarity, and judgments on institutional trust.

Culture↗

DSM-IV: empirical guidelines from psychometrics.

This commentary addresses the use of psychometric theory and methodology in the development of the 4th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV). Reliability issues include interdiagnostician reliability, temporally consistent diagnoses, and the relations of diagnostic criteria within categories. Validity issues include content validity of the diagnostic criteria, criterion-related validity (the relation between different criterion sets or their algorithms and alternative diagnostic criteria), and construct validity (the relation between diagnostic categories and external validators). Specific questions and methodology to investigate its utility vary with the different uses proposed for the diagnostic system. Specific psychometric methodologies that may be useful in developing the DSM-IV are noted, as are the limitations of psychometrics and their applicability to DSM-IV.

Humans↗

Demonstrating specific cognitive deficits: a psychometric perspective.

Cognitive deficits associated with psychopathology often do not occur in isolation. Consequently, identifying a specific deficit in a disorder requires comparing the magnitude of group differences on theoretically relevant measures with those on control tasks measuring other constructs. L. J. Chapman and J. P. Chapman (1973) noted that common forms of such Group x Task interactions are theoretically ambiguous unless performance measures have comparable discriminating power. The principles of psychometric matching for discriminating power developed in the Chapmans' research program are reviewed, and both criticisms and alternative psychometric approaches are evaluated. Psychometric matching can be mindful of threats to the construct validity of measures and frequently remains methodologically necessary. Otherwise, interactions involving measures that vary in sensitivity to individual differences may be misinterpreted as evidence for specific deficits.

Case-Control Studies↗

Reaction time slowing during high-load, sustained-attention task performance in relation to psychometrically identified schizotypy.

Prior research has demonstrated a reliable deficit in performance accuracy (e.g., d') on sustained-attention tasks in relation to psychometrically identified schizotypy and clinically diagnosed schizotypal psychopathology. The present study sought to expand the understanding of sustained-attention performance in relation to psychometric schizotypy through a study of reaction time (RT) performance. In this study, the author examined performance accuracy and RT on a high-load, sustained-attention task, the Continuous Performance Test-Identical Pairs (CPT-IP) version, in 31 high Perceptual Aberration Scale (PAS) and 26 normal control (control PAS) subjects from a large university population. High PAS (psychometric schizotypy) subjects displayed significantly longer RT performance on the CPT-IP relative to controls. The RT slowing was not explained by mental state or general intellectual ability factors. Contrary to expectation, a difference in performance accuracy (e.g., d') was not observed between the groups; however, power and other considerations cloud the interpretation of this finding. The meaning of the observed RT slowing is examined and its relation to current models of the development of schizophrenia is discussed.

Adolescent↗

Psychometric schizotypy and motor performance.

Motor abnormalities have long been a focus in discussions of schizophrenia. The present study used a newly developed line drawing task to examine fine motor performance and psychometrically assessed schizotypy in a large, randomly ascertained sample of young adults (N = 120) with no history of psychosis. Poor motor performance on the line drawing task, indexed by root-mean-square error (RMS), was significantly related to 4 separate psychometric measures of schizotypy in the overall sample. The psychometric schizotypy-RMS association remained significant for 2 of the schizotypy measures even when the effects of intellectual functioning, mental state factors, and sustained attention were statistically controlled in a regression analysis. The status of the line drawing index as a schizophrenia liability measure is discussed.

Adolescent↗

Psychometric profile of posttraumatic stress disorder, anxious, and healthy Vietnam veterans: correlations with psychophysiologic responses.

Three groups of Vietnam combat veterans, posttraumatic stress disorder (PTSD, n = 25), anxious (n = 7), and healthy (n = 18), completed a battery of psychometric tests. Measurement of psychophysiologic responses to imagery of individualized combat experiences followed the psychometrics. The PTSD Ss differed significantly from the healthy Ss on almost all measures but showed fewer differences from the anxious Ss. The typical PTSD S was characterized as anxious, depressed, prone to dissociation, and external in locus of control. Correlations with the physiologic responses supported the validity of psychometric scales specifically designed to measure PTSD but cast doubt on the interpretation of traditional measures of overreporting or dissimulation in this disorder.

Adult↗

Clinical applications of analogue behavioral observation: dimensions of psychometric evaluation.

Clinical assessment applications of analogue behavioral observation are discussed in the context of psychometric principles. Analogue behavioral observation involves the measurement of a client's overt behavior in a contrived situation that is analogous to situations that the client is likely to encounter in his or her natural environment. The goal of analogue behavioral observation is to derive valid estimates of the client's behavior in a current or future natural environment. Analogue behavioral observation instruments are often developed with insufficient attention to their psychometric properties, particularly content validity. Psychometric evaluative dimensions vary in their importance, as a function of the goals of the assessment. Although analogue behavioral observation instruments can be sensitive to change, their validity can erode over time and is affected by numerous sources of variance. Analogue behavioral observation assessment may be especially useful in detecting important functional relations in clinical assessment.

Behavior↗

Spanish and English Neuropsychological Assessment Scales (SENAS): further development and psychometric characteristics.

The Spanish and English Neuropsychological Assessment Scales were devised to be a broad set of psychometrically matched measures with equivalent Spanish and English versions. Study 1 in this report used item response theory methods to refine scales. Results strongly supported psychometric matching across English and Spanish versions and, for most scales, within English and Spanish versions. Study 2 supported in both English and Spanish subsamples the 6-domain model of ability that guided scale construction. Study 3 examined differential item functioning (DIF) of one scale (Object Naming) in relation to education, ethnicity, gender, and age. Effects of DIF on scale-level ability scores were limited. Results demonstrate an empirically guided psychometric approach to test construction for multiethnic and multilingual test applications.

Cognition↗

Some psychometric properties of the Test of Basic Auditory Capabilities (TBAC).

This study examined some psychometric properties of the Test of Basic Auditory Capabilities (TBAC). Two experiments are described that evaluate the psychometric functions and the test-retest reliability of the tests comprising the TBAC. The psychometric functions were established for young listeners with normal hearing and the test-retest reliability was evaluated both with young listeners with normal hearing and elderly listeners with hearing impairment. Results indicate that maximum scores on the TBAC are reached at presentation levels of at least 65-75 dB SPL. In addition, the reliability analyses indicate that the TBAC is a reliable measure for both young listeners with normal hearing and elderly listeners with hearing impairment when at least one practice test is given.

Adult↗

Psychometrically equivalent spondaic words spoken by a female speaker.

Several studies demonstrate that thresholds for the individual CID W-1 spondaic words peaked at 0 vu are not equivalent. The purpose of this study was to equate the spondaic word thresholds psychometrically. Two studies were performed on 2 groups of 20 listeners with normal hearing. In Experiment 1, psychometric functions were established for the 36 spondaic words spoken by a male (original recording) and female speaker. Based on the threshold data from Experiment 1, the words spoken by the female speaker were adjusted digitally in level to produce equal thresholds (equal intelligibility). In Experiment 2, psychometric functions then were established for the 36 spondaic words adjusted in level. The mean thresholds for the 2 experiments were the same (0.5 dB HL; ANSI, 1996), but the standard deviations for the word thresholds in Experiment 2 (0.7 dB) were significantly smaller than the standard deviations in Experiment 1 (1.6 dB). Both versions of the spondaic words spoken by the female speaker are included on the Speech Recognition and Identification Materials (Disc 2.0) compact disc.

Auditory Threshold↗

Cross-cultural psychometric testing of the Care Dependency Scale with data.

BACKGROUND: The importance of the present study lies in addressing whether it is justified to compare the care dependency status of older patients from different settings and cultures using the same instrument. AIM: The aim of this international study was to compare the psychometric properties of the Care Dependency Scale (CDS) by analysing data gathered in Finland, Spain and the United Kingdom (UK). METHOD: The Finnish, Spanish and UK research instruments were translations of the original Dutch CDS. Psychometric evaluations of this were carried out for each country separately as well as for the three countries combined, based on a convenience sample of 378 older patients. RESULTS: High alpha coefficients between 0.94 and 0.97 were obtained. Subsequent test-retest and interrater reliability revealed moderate to almost perfect kappa values. CONCLUSION: One of the main outcomes of the international comparison was that the findings between the three countries showed more similarities than differences in psychometric assessment, indicating that the CDS can be used for care dependency assessment in different countries.

Aged↗

[Has the translation process impact on the psychometric structure of a questionnaire?].

Little is known about the impact of item translation on the psychometric structure of questionnaires. The analysis of different translation versions within the same language provides an opportunity to address this question. Therefore, in the present study, two of the six available German translations of Eating Disorder Inventory (EDI) were compared with respect to their psychometric structure. A total of 449 female students completed the short forms of the EDI (consisting of the subscales drive for thinness, bulimia and body dissatisfaction). Structural equation modeling revealed that the item contents in both translations had been interpreted equivalently by the participants. In addition, the structural relations among the factors were equivalent across both versions. Whereas invariance of item-pair reliability was not tenable, the distribution of raw scores of the scales was similar. All in all, the findings suggest a very large degree of similarity in the psychometric structure of the alternative translations of the EDI versions. The results are discussed with respect to the lack of standards for the translation of questionnaires.

Adolescent↗

An operational measure of physician lifelong learning: its development, components and preliminary psychometric data.

Despite the emphasis placed on physicians' lifelong learning, no psychometrically sound instrument has been developed to provide an operational measure of the concept and its components among physicians. The authors designed this study to develop a tool for measuring physician lifelong learning, to identify its underlying components and to assess its psychometric properties. A 37-item questionnaire was developed, based on a review of literature and the results of two pilot studies. Psychometric analyses of the responses of 160 physicians identified 19 items that were included in the Jefferson Scale of Physician Lifelong Learning. Factor analysis of the 19 items showed five meaningful factors that were consistent with the definition and major features of lifelong learning. They were 'need recognition', 'research endeavor', 'self-initiation', 'technical skills' and 'personal motivation'. The method of contrasted groups provided evidence in support of the validity of the five factors. The factors' reliability was assessed by coefficient alpha. It is concluded that lifelong learning is a multifaceted concept, and its operational measure is feasible for evaluating different educational programs and for studying group differences among physicians.

Adult↗

A preliminary psychometric evaluation of the Hospital Anxiety and Depression Scale (HADS) in 963 people living with a spinal cord injury.

This study aimed to evaluate the preliminary psychometric properties of the Hospital Anxiety and Depression Scale (HADS) in a community sample of adults living with a spinal cord injury (SCI). A cross-sectional design was used with 963 people living in the community with an SCI. Participants were recruited via three spinal centres in the United Kingdom. They completed the HADS and the Life Satisfaction Questionnaire. Psychometric analyses were conducted for the whole sample, by gender and level of injury. The HADS demonstrated good internal consistency, with promising content validity. Two factors, approximating to anxiety and depression were extracted via factor analysis for the whole sample, by gender and level of injury. In line with existing literature, females scored significantly higher than males on the anxiety subscale. Item 7 ("I can sit at ease and feel relaxed") was found to be a complex item, with a potentially different meaning within this population. This study presents preliminary findings, which support the psychometric integrity of the HADS within an outpatient population with SCI. Items that included potential somatic components revealed a more complex factor loading profile. Recommendations are made to further investigate this measure with amendments to such items, incorporating inpatients and independent measures of anxiety and depression to address validity directly.

Adult↗

A psychometric evaluation of the Smoking Consequences Questionnaire-Adult in smokers with psychiatric conditions.

Rates of smoking among individuals with psychiatric conditions are much greater than those seen in the general population, yet little is known about the psychometric properties of commonly used instruments that assess smoking-related variables among smokers with psychiatric conditions. The present study examined the factor structure and psychometric characteristics of the Smoking Consequences Questionnaire-Adult (SCQ-A; Copeland, Brandon, & Quinn, 1995, Psychological Assessment, 7, 484-494) among smokers with psychiatric conditions. A confirmatory factor analysis of the instrument indicated that the factor structure derived by the instrument's authors provided an adequate fit to the data. In addition, many of the 10 subscales of the SCQ-A demonstrated adequate internal consistency as assessed by Cronbach's alpha as well as adequate test-retest reliability over the course of 1 week. Based on the data derived from this sample, the SCQ-A has adequate psychometric properties for applications involving smokers with psychiatric conditions.

Adult↗

Psychometrically equivalent Mandarin bisyllabic speech discrimination materials spoken by male and female talkers.

The purpose of this study was to develop, digitally record, evaluate, and psychometrically equate a set of Mandarin bisyllabic word lists for use in measurement of speech discrimination. Familiar bisyllabic words were digitally recorded by male and female talkers of Standard Mandarin. Percentage of correct word recognition was measured for each word at ten intensity levels ( -5 to 40 dB HL) in 5 dB increments using 20 normally hearing subjects. Using logistic regression, 200 words with the steepest logistic regression slopes were included in four psychometrically equivalent word lists of 50 words each, and eight half-lists of 25 words each. To increase auditory homogeneity of the lists, the intensity of words in each list was digitally adjusted so that the threshold of each list was equal to the midpoint between the mean thresholds of the male and female half-lists. Digital recordings of the psychometrically equivalent word recognition lists are available on compact disc.

Adult↗

Psychometrically equivalent trisyllabic words for speech reception threshold testing in Mandarin.

The aim of this investigation was to develop, digitally record, evaluate, and equate Mandarin trisyllabic words, which could then be used to measure the SRT. A selection of 90 frequently utilized trisyllabic words were digitally recorded by male and female talkers of Standard Mandarin and presented to 20 normally hearing subjects at 13 intensity levels (-10 to 14dB HL) in 2dB increments. Using logistic regression, psychometric functions were then calculated for all words. Twenty-four trisyllabic words with steep psychometric function slopes were selected, and their intensities were digitally adjusted to match the mean subject PTA (3.0 dB HL). The mean slopes for the 24 selected male and female trisyllabic Mandarin Chinese words were 11.3%/dB and 12.1%/dB, respectively. Thus we developed a list of words which were homogeneous with respect to audibility and slope. Digital recordings of the psychometrically equivalent trisyllabic words are available on compact disc.

Adult↗

Psychometric properties of the French and English versions of the Vancouver Obsessional-Compulsive Inventory and the Symmetry Ordering and Arranging Questionnaire.

The Vancouver Obsessional-Compulsive Inventory (VOCI) and the Symmetry Ordering and Arranging Questionnaire (SOAQ) are self-report measures that assess a wide variety of symptoms and features of obsessive-compulsive disorder (OCD) including checking, contamination, obsessions, hoarding, "just right", indecisiveness, and symmetry, ordering and arranging obsessions and compulsions. The original English versions of the VOCI and SOAQ have been shown to demonstrate excellent psychometric properties. The present study examined the reliability and validity of French translations of these measures in a non-clinical sample, and also involved the collection of supplementary psychometric information about the English versions of the scales from a new sample. Volunteer undergraduate students completed questionnaire packages including the VOCI and SOAQ, as well as measures of obsessive-compulsive, phobic and depressive symptomatology in their native language of either French or English. Results indicate that the French versions of the VOCI and SOAQ demonstrate similar and excellent psychometric properties to the English versions and that these measures are highly valid and reliable assessment tools for use in clinical and research applications in both languages.

Adolescent↗