Evidence for alternative strategies of sentence retention

Measurements of pupil size were taken while subjects listened to sentences and either tried to repeat them (R) or answered a question about them (QuA), after either a 3 or 7 sec retention interval. Pupil dilations were larger for R than for QuA, both towards the end of presentation and during the retention interval. Similar results were obtained by Kahneman and Wright (1971) when comparing total and partial recall of word lists. They attributed the differences in pupil dilations to differences in rehearsal strategy. However, the interaction between recall condition and retention interval was less convincing with sentential material, and an alternative explanation is suggested in terms of the level of abstraction at which the sentences are processed. This interpretation is supported by other evidence relating to the existence of alternative sentence retention strategies.

Pupil dilations failed to reveal phrase juncture phenomena, although two levels of ambient illumination were used in the hope of detecting such effects. In a modified question condition (QuB), where the question was given before the sentence, pupil dilations varied as a function of the part of the sentence providing the answer. These data indicated that people did not begin to frame their answer until they encountered in the sentence those words used in the question.     

CROSS-MODAL TRANSFER AND SENSORY EQUIVALENCE

Recent studies of cross-modal matching and transfer in animals and human subjects are reviewed and some problems concerning the design of experiments to study these phenomena discussed. Attempts to account for cross-modal effects are evaluated and the concept of sensory equivalence briefly examined.     

A developmental study of schedule-induced polydipsia in the rat

Rats 30, 60, 90, and 120 days of age were fed 105 45-mg food pellets on a noncontingent VT 70-sec schedule during 14 daily 2-hr sessions. Every animal became polydipsic on this schedule when compared with a schedule in which 105 pellets were presented at the beginning of the session. Mean polydipsic ratios (schedule intake/control intake) ranged from 2.9–5.4. Water intakes (milliliters per 100g body weight) did not differ during the last five sessions as a function of age. The results are discussed with respect to the generality of the class of adjunctive behaviors.     

Relative preference for external and self-controlled reinforcement in monkeys

Monkeys were tested for their relative preference for self-monitored and externally imposed systems of reinforcement. One monkey clearly preferred to self-reward his own performances. whereas a second monkey favored slightly the externally administered system but displayed a small gradual shift toward self-reward as the sessions progressed. Unlike previous findings. unmerited self-reward did not result in rapid discarding of self-imposed performance requirements. The level of work output and the interactive effects of multiple reinforcement control are possible operative factors in sustaining self-imposed contingencies long after punishment for unmerited self-reward has been discontinued.     

Nutritional misinformation of children: A developmental and experimental analysis of the effects of televised food commercials

This study assessed the accuracy of judgments of 100 school age children as to the presence of real fruit content in 3 sets of cereals and beverages advertised on TV: real fruit, nonfruit, and artificially fruit flavored products. In the baseline session, accuracy was an increasing function of age, but children at each age were deceived about real fruit content of artificial fruit products. In session 2, the experimental group saw TV ads for 6 products embedded in a program (naturalistic viewing). They then judged fruit content for these six advertised products, plus a matched set of six for which ads were not shown. Controls saw toy ads on TV, and then judged the same 12 products. In session 3, subjects in each group saw the same ads they had seen in Session 2, without the program and with instruction to attend very carefully to messages in the ad (intensive viewing). They then judged all 12 products again. After naturalistic viewing, few significant differential changes from baseline were found. But after intensive viewing, accuracy of judgment of advertised artificial fruit products was lower than baseline among experimental group children. By contrast, accuracy was higher than baseline both for control children's judgements of “advertised” prod-     

Violent groups

This article reviews relevant empirical studies and theoretical formulations in an effort to gain insight into the many violenceprone groups that have come to public attention in recent years. Research findings show group members tend to score high on variables like anger at family members and overcontrolled hostility, often are in developmental transition at the time they join the groups, and gain relief from significant emotional distress through group membership. Leader characteristics, group norm forming and group control processes particular to these kinds of groups are also described in an effort to develop further understanding.Parts of this paper were presented in New York City at a September 1979 symposium on forensic psychology and psychiatry sponsored by the New York Academy of Science.