A comparison of two multidimensional health locus of control instruments

This study examined the factor structure, internal consistency reliability, and construct validity of the multidimensional health locus of control (MHLC) instruments developed by K.A. Wallston, B.S. Wallston, and DeVellis (1978) and Lau (Lau, 1982; Lau & Ware, 1981). Both measures were administered to a sample of Veterans Administration (VA) medical outpatients (N = 181). Only minimal evidence of convergence was found between corresponding scales of the two MHLC instruments. Low convergent validity appears attributable to the poor internal consistency reliability of the Lau-Ware subscales. Moreover, results of factor analysis largely supported the a priori factor structure of the K.A. Wallston et al. (1978) MHLC instrument but failed to support the factor structure of the Lau-Ware instrument. Health locus of control (HLC) dimensions that emerged from simultaneous factor analysis of both instruments were most consistent with a three-dimensional typology (i.e., Personal Control, Professional Control, and Chance) rather than the four-dimensional typology proposed by Lau (Lau, 1982; Lau & Ware, 1981). Implications for HLC conceptualization and measurement are discussed.     

Measuring health beliefs on the Internet: A comparison of paper and Internet administrations of the Multidimensional Health Locus of Control Scale

A growing number of studies have supported the use of unidimensional psychometric test instruments administered via the Internet; however, support for the use of multidimensional scales is weak. The present study compares paper and Internet administrations of the Multidimensional Health Locus of Control (MHLC) Scale (Wallston & Wallston, 1981). In terms of reliabilities and factor structures, the Internet data were found to be at least as good as the paper data. MHLC scores were comparable for paper and Internet administrations, although the Internet sample scored significantly lower on the Powerful Others subscale. Overall, the results show that administration of the MHLC Scale via the Internet can produce data comparable to that obtained by pen-and-paper methods. However, it is concluded that generalization of these findings beyond the psychometric test instrument and sampling procedures used here is not warranted.     

Predictors of proficient technique and successful lesion detection in breast self-examination

Seventy-three women attending a health fair completed a questionnaire that measured demographic and health history variables, knowledge, and current practice of breast self-examination (BSE), Multidimensional Health Locus of Control (MHLC; Wallston, Wallston, & DeVellis, 1978), and components of the Health Belief Model (HBM; Rosenstock, 1974) in relation to breast cancer and BSE. These variables formed the basis of a conceptual model of BSE behavior that was examined by having each woman participate in a behavioral trial with a breast model in which her BSE technique and ability to detect simulated tumors was assessed. Regression analyses revealed that self-confidence in the efficacy of BSE was the best single predictor of proficient BSE. Powerful others HLC, knowledge of correct BSE behaviors, and chance HLC, respectively, also contributed significantly to the variance in performance. As anticipated, successful lesion detection was most strongly associated with more proficient BSE technique and higher frequency of BSE practice in the past six months. Internal HLC scores were not predictive of either behavioral measure. Similarly, except for perceived efficacy of BSE, HBM variables showed no strong relationships to observed behavior.     

Evaluation and Comparison of Three Instruments Designed to Measure Organizational Power and Influence Tactics

The purpose of the present study is to assess the internal consistency and construct validity of three instruments measuring the use of influence tactics. Instruments by Frost and Stahelski (1988) and Hinkin and Schriesheim (1989) had been developed to be psychometrically sound measures of the French and Raven (1959) bases of power. Kipnis and Schmidt (1982a) developed a new typology to measure organizational influence, the Profile of Organizational Influence Strategies (POIS). Four hundred seventy-nine undergraduate students completed these instruments to describe the influence tactics used by their supervisor. Results indicated that the Hinkin and Schriesheim instrument has greater internal consistency and a more precisely defined factor structure than the Frost and Stahelski instrument. The corresponding scales of the two instruments measuring the French and Raven power bases are not highly correlated, suggesting that the two instruments are not equivalent. Furthermore, the pattern of correlations between scales of the three instruments suggests that neither the French and Raven not the POIS typology fully represents the structure of influence tactics.     

Health Locus of Control After Lung Transplantation: Implications for Managing Health

Health locus of control (HLC) beliefs may influence the health behaviors that patients perform on their own behalf. Likewise, the HLC beliefs that clinicians consider desirable may influence how active they encourage patients to be in managing health. It remains unclear how involved lung recipients want to be and how involved transplant clinicians believe they should be. The aims of this study were to describe HLC beliefs and behaviors manifested by recipients and clinicians in the setting of lung transplantation. Mixed-methods were used, including quantitative techniques to measure demographics, clinical characteristics, and HLC using the Multidimensional Health Locus of Control Scale (MHLC), and qualitative techniques to explore how HLC beliefs were manifest in the clinical setting. Nearly all participants manifested behaviors consistent with high internality and externality, highlighting the importance of holding ‘dual health locus of control’ beliefs for optimal health management and lending support for recipients and clinicians to share responsibility for managing post-transplant health.Funded by the Nursing & Social Sciences Council of the International Society of Heart and Lung Transplantation.     

The development of a smoking-specific locus of control scale

Abstract

A 32-item questionnaire was designed to measure multidimensional locus of control beliefs specifically about giving up smoking (SLC Scale), and administered along with the Multidimensional Health Locus of Control Scale (MHLC) and a short smoking information questionnaire to 211 smokers. Psychometric analyses of the SLC scales included a series of repeated factor and reliability analyses which resulted in a final three-factor solution, containing 11 of the original SLC items. The three factors represented the following types of locus of control for smoking: a combined Internal-Chance factor, a Significant Others factor, and a Powerful Others factor with Chronbach's alpha coefficients of internal reliability of 0.63, 0.56 and 0.55 respectively. Analyses relating to the reliability and validity of the SLC scale are presented and discussed. As expected the SLC correlated more sensibly and significantly with subjects' reported behaviour and intentions regarding giving up smoking than did the MHLC scales.     

Health locus of control and health behaviour: results from a nationally representative survey

The present study aims to examine the association between sociodemographic variables and health locus of control (HLC) as well as HLC and health behaviour. Data from a representative sample of the German adult population, the Telephone Health Survey 2006 (GSTel06; N=5542), were used. A German version of the MHLC (multidimensional HLC) scales was used. Associations between sociodemographic variables and three dimensions of HLC (internal, powerful others and chance) and between HLC and health behaviour were calculated. In particular, higher age, low socioeconomic status and migration background were associated with higher HLC scores on the powerful others and chance dimension. Subjects scoring high on the chance dimension did less sports activity (OR: 0.8; CI: 0.7-0.9), had less medical teeth protection (0.7; 0.6-0.9), fewer health courses (0.8; 0.7-0.9) and conducted less systematic information-seeking (0.8; 0.6-0.9), while results regarding internal and powerful others HLC remained mainly insignificant. High chance HLC can be regarded as risk factor of adequate health behaviour. The associations between high chance HLC, low socioeconomic status and migration background emphasise the need for treatments and prevention programmes tailored to modify the high chance HLC of socially disadvantaged populations.     

Development of the Mental Health Locus of Control and Mental Health Locus of Origin Scales

The Mental Health Locus of Control (MHLC) Scale is an area-specific measure of locus of control expectancies designed to predict mental health related behaviors, particularly those occurring in treatment situations. The discriminant validity of the MHLC, in contrast with Rotter's 1-E measure of generalized expectancies, was demonstrated with two mental health related variables: beliefs concerning etiology of psychopathology, and information about abnormal psychology. Beliefs about etiology were measured by the Mental Health Locus of Origin (MHLO) Scale. The primary hypothesis, that individuals with 'endogenous' beliefs about etiology tend to have 'external' expectations for the client's role in treatment, was supported by a statistically significant (p < .001) correlation between the MHLC and MHLO Scales.     

Health locus of control in late life: a study of genetic and environmental influences in twins aged 80 years and older.

The factor structure of health locus of control (Form A; K. A. Wallston, B. S. Wallston, & R. DeVellis, 1978) was examined in 420 octogenarians (M age = 83.2 years), and the contributions of genetic and environmental factors to health-control beliefs in 141 octogenarian twin pairs (71 identical, 70 same-sex fraternal) were estimated. Factor analyses reproduced previously proposed factors (Internal, Chance, and Powerful Others). Associations between health-control beliefs and life satisfaction, depression, and other health-related measures (e.g., self-rated health, outpatient contacts, and hospitalization), were modest. Quantitative genetic analyses revealed significant shared environmental influence on the Chance subscale, and significant familiality (attributable to a combination of genetic and shared environmental influences) on the Powerful Others subscale; there was no evidence of familiality on the Internal subscale.     

Health locus of control and voluntary use of seat belts among high school students

An 18-item Multidimensional Health Locus of Control scale published by Wallston, Wallston, and DeVellis in 1978 was given to 124 high school students, 59 of whom wore seat belts and 65 of whom did not. It was hypothesized that nonseat-belt wearers were more likely to be externally oriented than seat-belt wearers but this was not confirmed. Strong scoring internal subjects were not found in this sample of students.     

Abuse, health locus of control, and perceived health among HIV-positive women.

This study of 230 predominantly poor Hispanic and African American women aged 25 to 61 years living with HIV/AIDS in New York City revealed high levels of both sexual (39%) and physical (44%) trauma before the age of 16. Both types of early trauma were correlated with later trauma, and all forms of trauma were significantly associated with current perceived health. In multivariate analyses controlling for relevant covariates, the Powerful Others and Internal Control subscales of the Multidimensional Health Locus of Control Scales (K. A. Wallston, B. S. Wallston, & R. DeVellis, 1978) acted as independent predictors of perceived health rather than (as hypothesized) mediators of the association between trauma and perceived health. Findings underscore the importance of addressing trauma and perceptions of control over one's physical health in the provision of health services to HIV-positive women.     

Expectancies and/or Experience: Divergent Views of Perceived Control

This study investigated the assumption, gleaned from several locus of control studies, that "expectancy" and "experience" are interchangeable constructs. All subjects were given the Health Locus of Control Scale (HLC) and the Tiffany Experienced Control Scales (EC). Factor analysis revealed that the scores of the HLC (as a variant of locus of control) did not load on the four main factors of the EC. These results do not support other locus of control studies concerning the interchangeability of expectancy and experience. These results also provide emphasis for the further clarification of the relationships of these two constructs.     

Development and validation of the Causes of Re-Injury Worry Questionnaire

Re-injury worry is an important construct in competitive sport that may influence performance and increase the risk of re-injury. However, there are currently no available instruments to measure the causes of re-injury worry. The purpose of this study was to develop the Causes of Re-Injury Worry Questionnaire (CR-IWQ). The study was conducted in three independent research phases to investigate the following: (a) the content relevance, (b) the factor structure and the factorial validity, (c) the concurrent validity, (d) the discriminant validity, and (e) the test-retest reliability (intraclass correlation coefficients; ICC), and the internal consistency of the instrument. Exploratory factor analysis (EFA) was chosen to examine the factor structure of the CR-IWQ. Confirmatory factor analysis (CFA) was used to examine further the factorial validity of the instrument. A number of valid constructs were used to assess the concurrent and discriminant validity of the CR-IWQ. The reliability of the new instrument was examined using Pearson r (ICC) and Cronbach α. Three hundred and seventy athletes with an acute musculoskeletal sport injury in the last year participated in the study. EFA revealed a 12-item model, representing two factors ("Re-injury worry due to rehabilitation" and "Re-injury worry due to opponent's ability"). CFA supported the two-factor model of the CR-IWQ. The concurrent and discriminant validity of the CR-IWQ was confirmed by examining correlations between the CR-IWQ with other constructs. The ICCs and the Cronbach α indices of the CR-IWQ were acceptable. We have demonstrated that the CR-IWQ is a good psychometric instrument that can be used for clinical and research purposes.     

Form C of the MHLC Scales: A Condition-Specific Measure of Locus of Control

Form C of the Multidimensional Health Locus of Control (MHLC) scales is an 18 item, general purposes condition-specific locus of control scale that could easily be adapted for use with any medical or health-related condition. Data from 588 patients with one of four conditions—rheumatoid arthritis, chronic pain, diabetes, or cancer—were utilized to establish the factor stucture of Form C and to establish the reliability and validity of the resultant four subscales: Internality; Chance; Doctors; and Other (powerful) People. The alpha reliabilities of the subscales are adequate for research purposes. Data from the arthritis and chronic pain subjects established that the Form C subscales were moderately stable over time and possessed considerable concurrent and construct validity. Some discriminant validity of Form C with Form B of the MHLC was also demonstrated.     

Perceived threat and depression among patients with cancer: the moderating role of health locus of control

Illness perception was found to be a better predictor of psychological outcome among cancer patients than the objective characteristics of illness. The current study explored the association between the perceived threat of illness (a major aspect of illness perception) and depression among cancer patients. We examined the hypothesis that this association will be higher for persons with low External (others) or internal (self) Health Locus of Control (HLC) than for those with high HLC. The study took an exploratory approach regarding the role that different sources of control (external and internal) may assume. Fifty-seven cancer patients completed self-report measures of Perceived Life Threat (PLT), HLC and Depression. The possible moderating role of HLC on the relationship between PLT and Depression was examined. A significant relationship between perceived threat and depression was found only among participants reporting low levels of internal locus of control. The results support the hypothesis that perception of cancer as life threatening is important factor in determining the level of depression among cancer patients. The results also support the differentiation between internal and external HLC and suggest that internal HLC may be more relevant than external HLC in managing perceived threat. Internal locus of control can be interpreted as having a sense of agency and mastery which is important in managing the cognitive perception of the threat of illness. Further research is needed in order to determine the role of external HLC in managing perceived or actual threats.     

Social communication fears: Factor analysis and gender invariance of the short-form of the personal report of confidence as a speaker in Spain

Public speaking is a highly prevalent fear that prevents from successful social communication. The Personal Report of Confidence as a Speaker (PRCS) is one of the most commonly used measures to assess people’s fear of public speaking. However, few studies have evaluated its factor structure. In this paper, two studies analyzed the psychometric properties of the short form of the PRCS (Hook, Smith, & Valentiner, 2008) and its convergent validity with the Self Statements During Public Speaking (SSPS) scale in Spain. Study 1 (N = 190) provided information about exploratory factor analysis and internal consistency. Study 2, with a different sample (N = 392), complemented Study 1 with confirmatory factor analysis, internal consistency, convergent validity with SSPS and test of measurement invariance across gender groups. Results of exploratory factor analysis yielded a one factor solution. Different indices of the confirmatory factor analysis (CFI, TLI, SRMR, RMSEA) confirmed a good fit. Internal consistency was high in both studies and convergent validity with SSPS was found. Evidence of configural, metric and scalar invariance across gender groups was obtained. These findings support the use of the short form of the PRCS and suggest that it is a useful instrument for public speaking assessment.     

Factorial structure of two health belief measures among older adults.

Confirmatory factor analysis of Wallston's Multidimensional Health Locus of Control Scale and Krantz's Health Opinion Survey was conducted using 197 nondiabetic and 171 diabetic older adults. Qualified support was found for the 3-factor structure of the Wallston measure when applied to older adults. The Krantz model provided a less-than-adequate representation of the older sample's data. When the items from these 2 measures were combined, a 4-factor structure was found. Multisample simultaneous factor analyses using LISREL revealed that the factor structures of the Wallston and the Krantz measures fit the diabetic and the nondiabetic samples fairly equivalently. Despite the similarities in factor structures, diabetic individuals reported greater belief in powerful others and less desire for behavioral involvement in the health-care process than did nondiabetics.     

Comparison of Response Formats for Mulitdimensional Health Locus of Control Scales: Six Levels Versus Two Levels

Two formats of the Multidimensional Health Locus of Control (MHLC) Scales were administered to 54 college students. Each subject completed the MHLC Scales in the standard 6-level response format (ranging from strongly disagree to strongly agree) and in a revised 2-level format (ranging from disagree to agree). Comparisons of internal consistency measures, principal components, and classification of subjects into groups indicate that the 2-level response format yields comparable data to those obtained with the 6-level format, particularly when classification of subjects is the goal.     

Comparison of response formats for Multidimensional Health Locus of Control Scales: six levels versus two levels

Two formats of the Multidimensional Health Locus of Control (MHLC) Scales were administered to 54 college students. Each subject completed the MHLC Scales in the standard 6-level response format (ranging from strongly disagree to strongly agree) and in a revised 2-level format (ranging from disagree to agree). Comparisons of internal consistency measures, principal components, and classification of subjects into groups indicate that the 2-level response format yields comparable data to those obtained with the 6-level format, particularly when classification of subjects is the goal.     

Structure of the Objectified Body Consciousness Scale: Reevaluated 20 Years later

The Objectified Body Consciousness Scale (OBCS) is a prominent measure of key constructs in the body image literature. Despite the impact and popularity of the OBCS, however, investigations of its factor structure have been limited. To our knowledge, the present study is the first since the instrument’s development 20 years ago to provide a detailed evaluation of the replicability of the factor structure of OBCS data in a sample of U.S. college women, the population for which the measure was originally developed and is used most frequently. Specifically, we used confirmatory factor analyses to evaluate the structure of OBCS data and identify areas for measure refinement. Internal consistency reliability and convergent validity were also examined. A sample of 368 U.S. college women completed the OBCS along with measures of body esteem and thin-ideal internalization as convergent validity indicators. Findings revealed that OBCS Control Beliefs items were poor indicators of the factor. A two-factor structure composed of Body Surveillance and Body Shame was supported. Support for internal consistency reliability and convergent validity was also garnered. Additionally, abbreviated versions of the Body Surveillance and Body Shame subscales produced good model-data fit without sacrificing reliability or validity. These results support the use of the OBCS Body Surveillance and Body Shame subscales to assess critical aspects of body image in research and practice contexts; the abbreviated versions of these subscales can address demands for brevity in these contexts.