The effects of illumination level and retinal size on the depth stratification of subjective contour figures

The apparent stratification in depth of subjective contour figures over their backgrounds was investigated as a function of illumination level, figure size, and viewing distance. Magnitude estimation, with a real contour figure serving as the modulus, was used to measure the stratification in depth of a subjective contour figure over its background. Illumination level and retinal size both had significant effects on the depth stratification of the subjective contour figures. The greatest apparent depth differences were obtained for figures of small retinal size under low levels of illumination. These results paralleled previous findings for judgments of subjective contour strength. Consequently, both contour clarity and depth stratification of subjective contour figures are affected in similar ways by illumination level, figure size, and viewing distance. The implications of this response coupling are discussed in terms of current theories of subjective contours.     

Using the Step it UP! Game to increase physical activity during physical-education classes

The Step it UP! Game is an interdependent group reinforcement contingency based on the Good Behavior Game. We evaluated the effects of the Step it UP! Game on the number of steps taken by 3rd-grade students during physical-education (PE) classes at a local public elementary school. We divided the class into 2 teams and awarded a “Step it UP! Champ” badge to the members of the team with the highest mean step totals at the end of each game. We used a reversal design to compare the mean number of steps taken while playing the game and during regular PE classes. Overall, participants took more steps while playing the game than they did during class periods without the game. When given the opportunity to choose playing the Step it UP! Game or having regular PE class during a follow-up session, 16 of 18 participants voted to play the game.     

Psychometric Synthesis of the Five Factor Wellness Inventory

This quantitative synthesis combines results of 59 studies that published psychometrics of the Five Factor Wellness Inventory (5F-Wel; Myers & Sweeney, 2005a, 2005b). Although few studies reported complete statistics, and demographically targeted research studies are needed, this synthesis reflects that the 5F-Wel (also known as the FFWEL; Mind Garden, n.d.) is sound psychometrically for adults: Internal consistency, subsample means, and intrascale correlations are promising, as are correlations with related constructs. Consequently, the 5F-Wel demonstrates utility for clinical use when working with clients on wellness goals.     

Cognitive processing of personally relevant information

Abstract

Subjects performed an idiographic, computerised version of the modified Stroop colour-naming task after having undergone a film-induced mood manipulation designed to produce either anxiety, elation, or a neutral mood. The Stroop stimuli were words related either to the subject's positive current concerns (e.g. goals, interests), to the subject's negative current concerns (e.g. personal worries), or to neither. The results indicated that words strongly related to subject's positive as well as to negative current concerns produced significantly more Stroop interference than did words unrelated or weakly related to their current concerns. Although the films strongly influenced the subjects' moods in predicted directions initially, mood changes were largely not maintained throughout the experiment. Thus, it is not surprising that no significant interactions with word type were found. These results indicate that the “emotional Stroop effect” occurs in normal subjects as well as in anxious patients, and occurs with positive as well as with negative material of strong personal relevance.     

Psychophysiological Responses of Sport Fans

The present study investigated psychophysiological differences in identified sport fans within the context of the biphasic theory of emotion (P. J. Lang, 1985). Forty participants, grouped into three levels of identification with the local university athletic teams, viewed five pictures from each of two categories (team-relevant sport and team-irrelevant sport). Self-identified sport fans rated team-relevant pictures as more pleasant and arousing compared to team-irrelevant pictures. The P3 component of the event-related potential to an irrelevant startle probe was diminished and heart-rate deceleration was enhanced during team-relevant pictures as a function of fan identification level, suggesting that these pictures evoked a motivated attentional state. Neither probe-P3 nor heart rate differed for team-irrelevant pictures. Lastly, increased positivity for slow cortical potentials was evident for team-relevant compared to team-irrelevant pictures, regardless of fan identification level. These results suggest the utility of psychophysiological measures in the study of sport fans, and for other positive emotions as well.