A Pilot Study of Pedestrians with Visual Impairments Detecting Traffic Gaps and Surges Containing Hybrid Vehicles

The increasing number of hybrid and quiet internal combustion engine vehicles may impact the travel abilities of pedestrians who are blind. Pedestrians who rely on auditory cues for structuring their travel may face challenges in making crossing decisions in the presence of quiet vehicles. This article describes results of initial studies looking at the crossing decisions of pedestrians who are blind at an uncontrolled crossing (no traffic control) and a light controlled intersection. The presence of hybrid vehicles was a factor in each situation. At the uncontrolled crossing, Toyota hybrids were most difficult to detect but crossing decisions were made more often in small gaps ended by a Honda hybrid. These effects were seen only at speed under 20 mph. At the light controlled intersection, parallel surges of traffic were most difficult to detect when made up only of a Ford Escape hybrid. Results suggest that more controlled studies of vehicle characteristics impacting crossing decisions of pedestrians who are blind are warranted.     

Children's perceptions of male and female principals and teachers

This study examined the influence of male and female school principals on first graders' perceptions of school principals and teachers. Participants were 190 male and female first graders who were shown four videotapes depicting all combinations of male and female teachers and principals. Results showed that children were accurate in their labeling of the videotapes regardless of whether the roles presented were stereotypical or counterstereotypical, and regardless of the sex of their principal. On rating scales, children with female principals were more nonstereotypical than children with male principals. Maternal employment was unrelated to their perceptions of teachers and principals. The results suggest that first-grade children do not hold overly stereotypic views and that the presence of both sexes as models for the role of school principal can have a noticeable positive effect on children's perceptions.     

Operantly conditioning a negotiator's concession making

This study investigated the effects of a bargaining strategy that rewards the opponent's concessions. The first of four experiments revealed that a negotiator's utilization of this reward strategy resulted in large concessions by and quick agreement with the opponent. The second experiment demonstrated that the large concessions continue after the rewards cease and the third, that two previously rewarded negotiatiors subsequently make large concessions to each other and reach quick agreements. Finally, the fourth experiment added strength to a reinforcement explanation of the results by eliminating an interpretation based upon a reciprocity effect.     

Vocational Certainty and Indecision in College Freshmen

Three groups of entering college freshmen, possessing varying degrees of identification of educational-vocational goals, were compared on a variety of personality, achievement, aptitude, school, and family factors. The major differences indicated that the most undecided group was more dependent than the other two groups, but equal to the most decided group in academic achievement, while a middle, or tentatively decided group, was not as successful academically as the most and least decided groups. These findings suggest that educational-vocational indecision has at least two dimensions. A need for different counseling approaches in dealing with uncertain students depending upon the antecedents of their uncertainty is likely.