Understanding seat-belt use: A test of Bentler and Speckart's extension of the ‘theory of reasoned action’

It is shown that Fishbein's ‘theory of reasoned action’ can be used to explain people's intentions to wear seat belts. As Bentler and Speckart (1979) have proposed, a self-report measure of past behaviour is shown to significantly improve the model's power; this extended Fishbein model being capable of accounting for the majority of the effects that extraneous variables, which are known to influence seat-belt use, have upon a person's behavioural intentions. In addition, it is shown that the model's motivation to comply term is, as Ajzen and Fishbein (1980) have proposed, a unipolar rather than a bi-polar construct, but that even when this construct is scored as unipolar, it does not significantly add to the model's predictive power.     

Using a self-evaluation system as a group contingency

The efficacy of a group-evaluation system was examined, with a reversal design, in two classes of students with disabilities. The results suggested that a group-evaluation system was effective in decreasing the inappropriate verbalizations of both groups. Student satisfaction data revealed that the students in both groups had positive reactions to the system. Factors contributing to the success of the intervention as well as suggestions for its implementation are discussed.     

The effects of hemispheric differences on feature perturbations

Summary Hemispheric differences for feature perturbations were investigated in two experiments. Stimulus displays consisting of five small squares arranged in a single row were presented tachistoscopically, with the subject instructed to state in which square a horizontal tick mark was located. Ticks could occur in any of the three middle squares, with half of the ticks presented on the inside and half presented on the outside of the square in relation to the fovea. Experiment 1 presented each array of five squares to the right or left of fixation at one of three distances from the fovea. Experiment 2 manipulated the distance between the squares and kept foveal distance constant. In each experiment, fewer errors were made when stimuli were presented to the left visual field/right hemisphere than when they were presented to the right visual field/left hemisphere, when ticks migrated toward the fovea. Experiment 1 found that increasing the distance from the fovea increased the error rate, but did not change the hemispheric differences. Experiment 2 found that increasing the distance between the squares did not change hemispheric effects reliably. The data imply that hemispheric differences for perceptual processing begin very early during sensory analysis.     

Cooperative learning and classroom climate

The impact of two cooperative learning techniques, Student Teams-Achievement Divisions and Teams-Games-Tournaments, on classroom climate among students was compared to a traditional whole-class format. Thirty-five student teachers were randomly assigned to one of the three classroom structures. Their pupils were 864 second-through sixth-grade students, including 288 non-Anglo (black and Mexican American) students. A new measure of classroom climate, the Classroom Attitudes Scale, was developed that produced two attitude factors: Social Relations and School-work Cooperative techniques generally produced a slightly more favorable climate on both dimensions, and especially for females on Social Relations. Of the cooperative methods, Teams-Games-Tournament produced a significantly more favorable climate for Anglo-American students. The results support the conclusion that choice of classroom structure can bias classroom climate in favor of or against different ethnic groups.