Psychophysiological responsivity and the type A behavior pattern

Studies were reviewed in which the psychophysiological responses of Type A and B subjects were studied in various contexts. It appears that Type A's manifest greater psychophysiological arousal than Type B's in solitary as well as interpersonal situations in which there is a moderate external incentive to accomplish something. and there is an intermediate probability of failing to accomplish that something. Further, Type A's appear to manifest greater psychophysiological arousal than Type B's in interpersonal situations in which another person annoys or harasses the subject. Why Type A's respond in these situations with greater psychophysiological arousal was discussed in terms of the possibilities that (a) these situations may engage some defining characteristic(s) of Type A's, (b) Type A's may fear and therefore try to avoid failure more vigorously than Type B's, and (c) Type A's may be more motivated to gain and maintain control over important environmental events and therefore are more aroused by threats to such control than Type B's.     

On the consistency between attitudes and behavior: Look to the method of attitude formation

A field study and a laboratory experiment were conducted to test the hypothesis that the method by which an attitude was formed is a crucial variable affecting attitude-behavior consistency. It was predicted that people who form their attitudes on the basis of direct behavioral interaction with the attitude object will demonstrate significantly greater attitude-behavior consistency than individuals whose attitudes were formed by other means. In the field study, students with direct prior experience with a housing crisis demonstrated greater consistency between their attitudes and behavioral attempts to alleviate the crisis than did students with similar attitudes but without prior direct experience. In the laboratory experiment, subjects who indicated their attitude toward a variety of puzzle types after working examples of each demonstrated greater consistency between these attitudes and subsequent behavior in a free play situation than subjects with similar attitudes formed on the basis of information given by the experimenter. It was suggested that direct behavioral experience produces an attitude which is more clearly, confidently, and stably maintained than an attitude formed through more indirect means.     

Loss of control by a less valid or by a less salient stimulus compounded with a better predictor of reinforcement

An unsalient stimulus, or one imperfectly correlated with reinforcement, may acquire significant control over responding, provided that it is the only available signal for reinforcement, but may fail to acquire control if it is reinforced only in conjunction with a second, more salient or more valid stimulus. A stimulus imperfectly correlated with reinforcement may also lose control over responding if having initially been reinforced in isolation, it is subsequently reinforced only in conjunction with another, more valid stimulus. If the effects of relative salience are to be explained in exactly the same way as those of relative validity, we should expect a similar loss of control by an unsalient stimulus, A, if, after initial consistently reinforced trials to A alone, subjects subsequently receive reinforcement only in the presence of a compound stimulus, A + B. Two experiments on discrete-trial discrimination learning in pigeons and one on conditioned suppression in rats confirm this expectation. The results have implications for theories of selective association in conditioning and discrimination learning.     

Short-term memory and information processing in pigeons

Six pigeons were trained to asymptotic performance on a variable-delay matching-to-sample task in which the samples were sometimes line or color elements and sometimes line-color compounds. On compound-sample trials, the comparison stimuli were sometimes color elements and sometimes line-tilts. Sample type and delay (0, 1.5, and 4.5 sec) were varied within sessions, and sample duration (.4, 1.0, and 3.0 sec) was varied between sessions. Forgetting curves were steeper for line-tilt than for color. As sample duration increased, matching performance improved more for colors than for line-tilts, especially at delays greater than zero. Performance was better with element samples than with compound samples only on the line-tilt dimension at zero delay. Some predictions of a unitary trace growth and decay theory of pigeon short-term memory were not confirmed. A dual-code hypothesis was proposed to account for the data.     

The developmental relationship between identity and equivalence conservation

Hooper's (1969a) finding that identity conservation develops prior to equivalence conservation was investigated using a more stringent within-subject design. Seventy-two kindergarten, first, and second graders were given three conservation tasks: (1) Identity, (2) Equivalence 1, in which the perceptual cues were comparable to those in Identity, and (3) Equivalence 2, the traditional Piagetian conservation task. Each task was administered under two levels of transformation. No significant differences in performance as a function of level of transformation, type of equivalence task, or sex of S were found, but first and second grade Ss performed better than kindergarten Ss. Eighty-six percent of the sample conserved in an all-or-none fashion, and 7 Ss (10%) passed equivalence while failing identity, thus contradicting the developmental priority of identity conservation.     

Age differences in organization and recall: The effects of training in categorization

An alternating sort/recall task was employed to train fourth graders and college students in organizational strategies. Free-sorting Ss, at both age levels, sorted a group of words into two to seven categories. Analyses of final sorting patterns indicated reliable differences between the children and adults. The organizational schemes thus developed by the free-sorting Ss were taught, by means of a yoking procedure, to other Ss. Results indicated that the recall of fourth graders was improved when they were forced to learn the sorting patterns developed by the older Ss. Similarly, impairment in the recall of college students was observed when they were required to sort according to the organization employed by the fourth graders. These findings imply that changes in organization can result in changes in recall performance.     

The meaning of observed violence: Effects on arousal and aggressive behavior

Eighty male subjects were either attacked by a confederate or treated neutrally and then watched a violent movie. Subjects were told beforehand that the fighting in the movie was motivated by either desires for revenge, by professionalism, or by altruism. Other subjects were shown the film without comment. Relative to subjects in all other conditions, subjects who had been attacked and told that the fight was motivated by revenge subsequently (1) gave more intense shocks to the confederate, (2) rated themselves as less restrained in aggressing, and (3) manifested higher levels of blood pressure at the conclusion of the film. The results indicate that the meaning attched to observed violence may affect the aggression elicited by that violence in at least two ways: by lowering inhibitions against aggressing, and by raising arousal levels.     

Aggression and power restoration: The effects of identifiability and timing on aggressive behavior

The study was designed to demonstrate that one function of aggression is the restoration of power. It was predicted that, after an individual had his power reduced, greater aggression would be emitted when the individual could be identified as the attacker by his victim than when he could not. It was felt that only when the aggressor was identifiable could he completely restore his power vis-à-vis the victim. A second aim of the study was to investigate the effects of timing of aggression on the intensity of aggression. It was predicted that in a learning situation, if aggression were utilized solely as a teaching device, greater aggression would be emitted by the “teacher” when the “learner” made mistakes early as opposed to late in the task. However, if the individual were motivated to restore his power by aggressing, greater aggression would occur when the mistakes were made late since having to wait should frustrate the teacher's desire to restore power through aggression. The design of the study was a 2 × 2 × 2 factorial in which subjects were either insulted or not, given the opportunity to aggress either anonymously or when clearly identified, and able to aggress either early or late in a learning task. The results supported the power-restoration hypothesis: Subjects who were insulted aggressed more when identifiable than when anonymous. Also, there was greater aggression in the early as opposed to late conditions under all circumstances except in the insultidentifiable condition.