Brendan J. Morse

The development of a general Internet attitudes scale

The popularity of Internet use has generated a need for reliable and valid Internet attitude assessments. Current practices in the development and validation of Internet attitude scales have raised several methodological and practical issues. The purpose of this study was to develop general Internet attitudes measure as well as to explore the psychometric and methodological concerns surrounding the construct validity of existing Internet attitude scales. A three-study sequence was conducted that included the development and refinement of the Attitudes Towards the Internet Scale (ATIS), an investigation of differences between Internet and paper-and-pencil administrations, and differential item and person functioning. The ATIS demonstrated appropriate psychometric qualities and is suitable for general use. Suggestions for future researchers and practitioners interested in the assessment of Internet attitudes are provided.

Finding a Between-Person Negative Effect of Self-Efficacy on Performance: Not Just a Within-Person Effect Anymore

Research examining the relationship between self-efficacy and performance has tended to find a positive effect at the between-person level and a weak negative or null effect at the within-person level. This pattern of results has led to a belief that the level of analysis is a key factor in determining the sign of the relationship. Using a between-person experimental design, the authors demonstrate a negative effect for self-efficacy on motivation and quality of performance at the between-person level. A positive effect for self-efficacy on the quantity of tasks engaged, apparently due to the reduction in motivation on each task, was also found. The discussion focused on the relevance of the findings in the debate between social cognitive and control theorists.

Using the Graded Response Model to Control Spurious Interactions in Moderated Multiple Regression.

Recent simulation research has demonstrated that using simple raw score to operationalize a latent construct can result in inflated Type I error rates for the interaction term of a moderated statistical model when the interaction (or lack thereof) is proposed at the latent variable level. Rescaling the scores using an appropriate item response theory (IRT) model can mitigate this effect under similar conditions. However, this work has thus far been limited to dichotomous data. The purpose of this study was to extend this investigation to multicategory (polytomous) data using the graded response model (GRM). Consistent with previous studies, inflated Type I error rates were observed under some conditions when polytomous number-correct scores were used, and were mitigated when the data were rescaled with the GRM. These results support the proposition that IRT-derived scores are more robust to spurious interaction effects in moderated statistical models than simple raw scores under certain conditions.

A preliminary examination of the effect of massage on state body image

Evidence suggests positive effects of massage on psychological health; however, little is known about the effects of massage on body image. This research examined the effect of massage on state body image as well as relations between trait body image and attitudes toward massage. Forty-nine female university students were randomly assigned to either a massage condition or a control condition. It was hypothesized that participants in the massage condition would report improved state body image following the intervention when compared to participants in the control condition. As predicted, participants in the massage condition reported a more favorable state body image than participants in the control condition post-manipulation. Certain body image evaluations were moderately associated with views that massage is pleasurable, with the link between Body Areas Satisfaction and viewing massage as pleasurable reaching significance. Research is needed to determine the mechanism/s through which massage improves body image.

Cross‐Cultural Measurement Invariance of the Employment Opportunity Index (EOI) in Mexican and Brazilian Professionals

Perceived employment alternatives have been shown to add incremental variance in understanding voluntary turnover as well as factors related to recruiting and staffing. The Employment Opportunity Index (EOI) is a multidimensional assessment of perceived employment alternatives that has exhibited predictive validity across multiple job types and populations. This study assessed the measurement invariance of the EOI in American, Mexican, and Brazilian professionals. We found support for configural and metric invariance in all five dimensions of the EOI with these populations, and support for scalar invariance three of the five EOI dimensions. The construct validity of the EOI appears to be relatively robust in Latin American populations, although cultural and macroeconomic factors may impose some response bias in these groups.

Virtual ideals

We examined the effect of video game play with muscular avatars on the body image of college-aged males.The muscularity of the avatar used in video game play was found to decrease body esteem in males.Game play with a muscular avatar did not appear to affect perceptions of muscularity among the men in this sample. The perpetuation of unrealistic body ideals by popular media has been linked to negative body image and self-esteem; however, the influence of video games has remained largely unexamined despite their growing popularity as a media form, particularly among men. The purpose of this study was to investigate whether playing video games that emphasize an unrealistic male body ideal has a negative impact on body satisfaction. Participants played a highly realistic video game for 45min and then completed questionnaires measuring muscularity concerns and body image. Men randomized to the experimental group played the game with a character of exaggerated muscularity, whereas those randomized to the control group played with a character of average build. Men in the muscular condition reported significantly lower body satisfaction than men in the control condition. Considering the wide-spread use of video games, as well as the increasing muscularity of the ideal male body in popular culture, this finding could have important implications for the psychological well-being of men who regularly play video games. Further research should assess whether this lowered body satisfaction is maintained and to determine if negative behavioral consequences emerge.

Replicate This! Creating Individual-Level Data From Summary Statistics Using R

Incorporating realistic data and research examples into quantitative (e.g., statistics and research methods) courses has been widely recommended for enhancing student engagement and comprehension. One way to achieve these ends is to use a data generator to emulate the data in published research articles. MorseGen is a free data generator that creates realistic, individual-level data based on user-specified summary statistics (e.g., N, mean, standard deviation, and r). These values can be used in course exercises that allow students to replicate the published results for any between-subjects design or correlation study. Using realistic data generated by MorseGen addresses multiple learning goals proposed for undergraduate psychology students as well as the initiative to increase the realism of exercises and examples in quantitative courses.