Sample duration and type of stimuli in delayed matching-to-sample in rhesus monkeys

Two experiments were performed to determine the effect of sample duration (0.1, 2, and 4 sec), delay interval (.03, 4, 8, 16, and 32 sec), and type of stimulus (color and shape) on the matching performance of rhesus monkeys. In Experiment 1, the 15 possible delay-duration combinations were randomly presented in blocks of 15 trials. In Experiment 2, each duration was held constant and the five delays randomly presented. Then each delay interval was held constant with the three durations randomly varied. Matching performance increased as sample duration increased (ps < .01 and .005), while length of delay did not significantly affect performance. The type of stimuli paired in the matching test significantly affected performance (ps < .05 and .10) with the shape/shape choices leading to the poorest performance. Stimulus discriminability and amount of training with brief sample durations were implicated as significant determinants of matching performance.     

From the Point of View of Sport

Zero-sum aspects of sport have generated a number of ethical concerns and a similar number of defenses or apologetics. The trick has been to find a middle position that neither overly gentrifies sport nor inappropriately emphasizes the significance of winning and losing. One such position would have us focus on the process of trying to win over the fact of having one. It would also ameliorate any harms associated with defeat by pointing out that benefits like achievement, excellence, and moral development are available to winner and loser alike. Relying on the notion of ‘frame’ introduced by Polanyi, I argue that this approach underplays the poignant drama of sport (including the sting of defeat) and thus, seeks redemption at too high a cost. I argue for a version of red-blooded competition that is justified more by transcendence than mitigation, more by a willingness to play again tomorrow than civility during any single contest. I analyze sport in terms of its receptivity to such repetition and find that epistemological uncertainty, enhanced by the presence of chance in sport, renders repeat engagements both sensible and attractive. I conclude that sport verdicts, unlike outcomes in war, business, and love, do not settle things. Rather they invite both winner and loser alike to ‘play again tomorrow’.     

Youth Perspectives on Parental Career Influence

The role of parents in youth career development is generally acknowledged though, often, perfunctorily. This inquiry examines youth perceptions of parental influence on their career development. We ask young men and women about specific career development attitudes and behaviors that bear on their relations with their parents. The sample consists of survey data from 362 high school juniors. The results confirm the trend of recent studies that report compatibility between parent and youth values, aspirations, and plans. Of all the people to whom youth can turn for help with making career plans, most look to their mothers. The findings apply across gender, to young men as well as young women; and they apply across race, to minority youth as well as majority-culture youth. The results underscore the importance of parents as allies and resources for career counselors in facilitating youth career development.