Progressive elaboration and memory for order in children

Three experiments were conducted investigating memory for items and order in a progressive elaboration paired-associates task. For all subjects retention of item information was improved by the use of progressively elaborated interactions relative to a no-elaboration control condition. For second and fourth graders, retention of order information depended upon the type of elaboration. If successive interactions were added in a logical temporal order, retention (of order information) was superior to the case where the successive interactions were added in a random order. This effect was not obtained with kindergarten children. In the second and third experiments, kindergarteners were instructed regarding the sequencing of the successive items, and results similar to those obtained with older children ensued. The data were discussed in terms of Tulving's distinction between episodic and semantic memory.     

Resistance to continuous delay of reinforcement or extinction following partial delay or partial reinforcement in acquisition: A direct comparison

Rats received either partial reward (PR) or partial delay (PD) in acquisition with one, two, or three delay or nonreward trials followed by an immediately rewarded trial or one delay or nonreward trial followed by an immediately rewarded trial. These four groups were then split in half and given either continuous delay or continuous nonreward (extinction) in a “response persistence” phase. In addition, two continuously reinforced groups, one experiencing continuous delay, and the other experiencing extinction were included. The results showed that response persistence was greater when PD groups were given continuous delay rather than extinction, but the opposite was true for PR groups. The “length” (1, 2, or 3 versus 1 nonreward or delay trial) also transferred to the response persistence phase with the length 1, 2, and 3 conditions being more persistent than the 1 length conditions. The results were discussed with respect to theoretical notions of response persistence.     

Magnitude of negative reinforcement and resistance to extinction

In the first experiment rats experienced large or small magnitude of negative reinforcement (shock reduction) in a straight alley. Half of the subjects in each magnitude group received continuous reinforcement, and the other half received a 50% partial reinforcement schedule (nonreinforcement consisting of no shock reduction in the goal box). In extinction the groups were ordered: large partial > small-partial > small-continuous > large-continuous. In the second experiment rats received large, small and nonreinforcement in various sequences using the runway-negative reinforcement procedure and were ordered: SNL>LNL>SNL>LNS in resistance to extinction (letters represent the magnitudes in the sequence experienced in acquisition). The results of these experiments indicate a commality between positive and negative reinforcement with respect to behavioral phenomena and theoretical accounts of those phenomena.     

Locus of control,field dependence and the conditions arousing objective vs subjective self-awareness

Observations of persons engaged in quasievaluative situations revealed that the greater amounts of body movement characterized as tension reducing were exhibited by persons holding internal control as opposed to external control expectancies. Conceptualizing situations as varying in the degree to which they allow one to become task involved (subjective self-awareness) or self-conscious (objective self-awareness) it was hypothesized that the latter would be more disruptive to internals, the former to externals. Body movement exhibited during introspection and personal reminiscence supported this hypothesis though no support was found in another task involving the completion of moral dilemma stories. In the latter task field dependent subjects proved to be more affected by self-awareness conditions, writing more normative stories when cues for objective self-awareness were more prominent.     

Ambiguity of acceptance,social desirability,and dating choice

Male subjects differing in social desirability (likableness, physical attractiveness) chose a date from an array of females of three levels of physical attractiveness. Choices were made under two conditions: one where acceptance was assured regardless of whom subject chose; the other where acceptance was left ambiguous. The findings were as follows: (a) subjects selected a more physically attractive female when assured of acceptance than when acceptance was left ambiguous; (b) subjects estimated that highly physically attractive females were less likely to accept them as a date than were either moderately physically attractive or physically unattractive females; (c) subjects' self-ratings of their likableness were not related to the physical attractiveness of their choices under either choice condition nor to their estimates of their chances that the females would accept them as a date; and (d) subjects' self-evaluated physical attractiveness, although unrelated to the physical attractiveness of the subjects' choices, did relate to subjects' estimates of their chances of acceptance. Highly physically attractive subjects estimated their chances of acceptance as better than did subjects who considered themselves low in physical attractiveness. The implications of the findings for the “matching hypothesis” are discussed.     

Effects of metronome-conditioned relaxation,metronome-induced relaxation,and progressive muscle relaxation on insomnia

Although several controlled studies have indicated that relaxation can be effectively employed in the treatment of insomnia (Borkovec and Fowles, 1973; Steinmark and Borkovec. 1974; Haynes et al., 1974), the relaxation training procedures thus far utilized have typically necessitated several hours of therapist-client contact. The possibility of a more efficient relaxation procedure for treating insomniacs suggests an attractive alternative to the tense-relax instructions of progressive muscle relaxation (Jacobson, 1938). Brady (1973) has reported that the sound of a metronome set at 60 beats per min is inherently relaxing, and although he has only reported on the effects of the metronome when paired with verbally-induced relaxation (both general suggestions of relaxation and instructions to tense and relax successive muscle groups), he has successfully employed this technique in the treatment of borborygmi (rumbling noises in the abdomen) and essential hypertension (Brady, 1973; Brady, Luborsky and Kron, 1974). If the sound of the metronome alone, which would require minimal therapist-client contact, is sufficient to induce relaxation, the efficiency with which relaxation can be achieved in the treatment of insomnia, as well as other tension-related disorders. may be greatly enhanced.The present study was designed to assess the relaxation-inducing properties of (a) Brady's metronome-conditioned relaxation (metronome plus verbal relaxation instructions), (b) progressive muscle relaxation and (c) metronome-induced relaxation (the sound of a metronome alone) in the treatment of insomnia. In order to provide an evaluation of the effectiveness of relaxation techniques with a broader population than was sampled in previous investigations of this nature, this study included employed adults as well as college students in the subject pool. In addition to its implications for treating insomnia, this study was designed to yield an independent test of the hypothesis that a 60 beat per min metronome sound has the capacity by itself to induce relaxation.     

Acquisition of a free-operant-appetitive response in pigeons as a function of prior experience with response-independent food

Deficits in learning to escape from electric shock following exposure to response-independent preshocks have frequently been reported and have been referred to as learned helplessness. Experiments were conducted in order to determine whether a phenomenon similar to learned helplessness could be induced in appetitive free-operant procedures with pigeons. Subjects received preliminary training under one of the following conditions; protracted exposure to response-dependent grain presentations (key pecking), protracted exposure to response-independent grain deliveries, or short-term hopper training. Subjects were then tested for acquisition of a treadle-pressing response which was the only means of access to grain in the experimental chamber. The acquisition of the treadle-pressing response was retarded following protracted exposure to response-independent grain deliveries and the degree of this retardation was related to the complexity of the response-reinforcer contingency.     

Relation between intelligence and short-term memory

Several prior studies have concluded that the correlation between IQ and STM depends on differences in encoding or rehearsal strategies. Low IQ subjects use less effective strategies than high IQ subjects. One basis for these conclusions is that IQ exerts its greatest influence on the recall of early items in to-be-remembered lists, having little effect on the recall of recency items. The present study measured IQ/STM correlations in children, using probed serial recall of supraspan digit lists. The results showed the predictive power of IQ to range from a maximum in the case of recall for recency items to practically zero in the case of primacy items. Several explanations for the data are discussed, taking account of the possible roles of individual differences in rehearsal, in item persistence, and in the ability to access specified information in a short-term store.     

Some conditions that affect admissions of attitude change

Previous research has shown yielders to persuasive communications to be negatively evaluated by observers of the persuasion but positively evaluated by the persuaders. Resisters of persuasion, on the other hand, are evaluated positively by observers but negatively by the initiators of the persuasive effort. Two studies were conducted to determine (a) whether individuals are aware of the differing evaluations of yielders and resisters by persuaders and observers and (b) the extent to which targets of influence attempts strategically employ this information to enhance their images in the eyes of others. Experiment 1, a role-playing study, demonstrated that targets of persuasive appeals are cognizant of the pattern of evaluations provided to yielders and resisters by persuaders and observers. Experiment 2 indicated that targets' public reports of attitude change were shaped so as to produce the most positive evaluations from the audience to those reports. The greatest stated influence occurred in the sole presence of the persuasive agent, an intermediate amount of stated change occurred when both persuader and observer were present, and still less occurred in the sole presence of an observer to the influence attempt. The results of anonymous, private measures of change paralleled in pattern those of the publicly admitted change, but were not significant.