Testing the tilt-constancy theory of visual illusions

Prinzmetal and Beck (2001) Journal of Experimental Psychology: Human Perception and Performance 27 206 - 217) argued that a subset of visual illusions is caused by the same mechanisms that are responsible for the perception of vertical and horizontal a theory they referred to as the tilt-constancy theory of visual illusions. They argued that these illusions should increase if the observer's head or head and body are tilted because extra reliance would then be placed on the illusion-inducing local visual context. Exactly that result had previously been reported in the case of the tilted-room and the rod-and-frame illusions. Prinzmetal and Beck reported similar increases in the tilt illusion (TI), as well as the Z?llner, Poggendorff, and Ponzo illusions. In two experiments, we re-examined the effect of head tilt on the TI. In experiment 1, we used more conventional TI stimuli, more standard experimental methods, and a more complete experimental design than Prinzmetal and Beck, and additionally extended the investigation to attraction as well as repulsion effects. Experiment 2 more closely replicated the Prinzmetal and Beck stimuli. Although we found that head tilt did increase TIs in both experiments, the increases were of the order of 1 degrees -2 degrees, more modest than the 7 degrees reported by Prinzmetal and Beck. Significantly, the TI increase was larger when inducing tilts and head tilts were in the same direction than when they were in opposite directions, suggesting that the tilt-constancy theory may be oversimplified. In addition, because previous evidence renders unlikely the claim that the Poggendorff illusion can be explained simply in terms of misperceived orientation of the transversals, the question arises whether there might be some other explanation for the increase in the Z?llner, Poggendorff, and Ponzo illusions with body tilt that Prinzmetal and Beck reported.     

The problem of measurement model misspecification in behavioral and organizational research and some recommended solutions

The purpose of this study was to review the distinction between formative- and reflective-indicator measurement models, articulate a set of criteria for deciding whether measures are formative or reflective, illustrate some commonly researched constructs that have formative indicators, empirically test the effects of measurement model misspecification using a Monte Carlo simulation, and recommend new scale development procedures for latent constructs with formative indicators. Results of the Monte Carlo simulation indicated that measurement model misspecification can inflate unstandardized structural parameter estimates by as much as 400% or deflate them by as much as 80% and lead to Type I or Type II errors of inference, depending on whether the exogenous or the endogenous latent construct is misspecified. Implications of this research are discussed.     

Workaholism among a sample of Turkish managers and professionals: an exploratory study

This exploratory study attempted to replicate previous North American research on workaholism and the relationship of workaholism components proposed by Spence and Robbins to potential antecedents and consequences. Data were obtained from 60 managers and professionals in Istanbul using anonymous questionnaires. These questionnaires contained measures previously used in North America translated into Turkish. Most measures had acceptable internal consistency reliability, and the pattern of findings were generally consistent with previous North American results. However, two of the three measures of workaholism components did not produce acceptable reliabilities, which suggests reconsideration of these specific measures and their items.     

Confidentiality in end-of-life and after-death situations

Confidentiality is one of the foundations on which psychotherapy is built. Limitations on confidentiality in the therapeutic process have been explained and explored by many authors and organizations. However, controversy and confusion continue to exist with regard to the limitations on confidentiality in situations where clients are considering their options at the end of life and after a client has died. This article review these 2 areas and provides some suggestions for future research.     

The relationship of environmental concern with public and private pro-environmental behaviours: A pre-registered meta-analysis

Previous meta-analyses identified a gap between environmental concern and pro-environmental behaviours. However, the failure to differentiate these behaviours and the influence of contextual factors may limit understanding of the gap. This pre-registered meta-analysis evaluated the magnitudes of the correlations of environmental concern, as measured by the New Environmental Paradigm of thinking, with public and private pro-environmental behaviours and investigated the moderating roles of sociocultural contexts. Environmental concern was found positively correlated with public pro-environmental behaviour (k = 10, N = 4636; r = 0.27) and private pro-environmental behaviour (k = 31, N = 20,907; r = 0.35). These two pooled correlations did not differ significantly. Institutionalization of environmental protection did not moderate these correlations, while cultural factors, including individualism, long-term orientation, and external control, did. These findings maintain the utility of environmental concern in facilitating different pro-environmental behaviours and highlight the lack of research attention on public pro-environmental behaviour.     

‘I Can't Go Back Because If I Go Back I Would Die’: How Asylum Seekers Manage Talk about Returning Home by Highlighting the Importance of Safety

Asylum seekers living in the UK have been shown to have fled danger in their countries of origin, only to face hardship and the threat of deportation once there. This paper draws on the discursive psychological approach to address the way in which asylum seekers in the UK manage questions about returning to their country of origin. Interviews were conducted with nine asylum seekers in a refugee support centre in the Midlands. The interviews were transcribed and analysed using discourse analysis. The analysis showed that participants drew on the notion of safety to counter suggestions that they should return to their country of origin and to manage their identity as legitimate asylum seekers in need of support. The use of this strategy and the use of interviews for discursive analysis are discussed. Copyright © 2014 John Wiley & Sons, Ltd.     

Identification of Oppositional Defiant Disorder in Young Adult College Students

Long-considered a disorder restricted to children and adolescents, more research is needed to understand how oppositional defiant disorder (ODD) affects adults. Recent research suggests that symptoms of ODD persist into adulthood and are associated with specific negative functional outcomes. This current study seeks to investigate the prevalence and associated impairments of ODD symptoms in young adults. Two large samples of college students between the ages of 18–24 years old (N =?1792; N =?1497) completed self-report measures of ODD symptoms, ADHD symptoms, psychiatric diagnoses, and functional impairments. Rates and internal consistency of ODD symptoms were calculated, and multiple regression was used to estimate the association between high levels of ODD severity scores and social and authority-related impairments, as well as online antagonistic behavior. In the two samples, the proportion of individuals reporting four or more symptoms of ODD was estimated to be 3.39 and 4.12% respectively, and did not vary significantly by gender. Higher ODD severity was associated with social impairment, online antagonistic behavior, and greater conflict with authority figures, even after controlling for ADHD symptoms and self-reported depression or anxiety diagnoses. ODD symptoms measured in college students demonstrate acceptable reliability and are uniquely associated with specific impairments. The findings from this study support greater consideration of ODD symptoms in adult populations.     

Family Caregiver’s Positive,Negative, and Ambivalent Feelings Towards Stroke Survivors: Association with Psychological Well-Being

Applied Research in Quality of Life - Ambivalence is the simultaneous experience of positive and negative feelings toward a specific person. Recent research suggested ambivalence is negatively...