A follow-up developmental study of hypothesis behavior among mentally retarded and nonretarded children

To clarify the roles of IQ and mental age (MA) in hypothesis behavior, MA-matched subjects at three levels of IQ (70, 100, and 130) and three levels of MA ($\text{5}\text{1}\text{2}\text{, 7}\text{1}\text{2}\text{,}\text{and}\text{9}\text{1}\text{2}\text{years}$) received blank-trial discrimination learning problems using procedures designed to discourage position-oriented responding. With position responding discouraged, earlier findings were contradicted in that no hypothesis measure showed a main effect of IQ. This suggest that previously reported IQ group differences in hypothesis behavior may not reflect cognitive deficits inherently linked to low IQ, but instead may reflect the influence of specific methodological factors. The finding and interpretation are consistent with Zigler's (American Journal of Mental Deficiency, 1969, 73, 536–556) “developmental” theory of retardation and inconsistent with the general “difference” position. In additional findings, the predictions that subjects at all three MA levels would use hypotheses, and that retarded children from special-education classes would use hypotheses more often than retarded children “mainstreamed” in classes for the nonretarded were confirmed.     

Problem-solving strategies on a partial reinforcement task: Effects of socioeconomic status and cognitive level

Differences in performance between lower- and middle-class children on partial reinforcement tasks have often been attributed to motivational differences between the groups. An alternate hypothesis suggests that different environmental experiences have resulted in differences in familiarity with problem-solving tasks. Both of these hypotheses have generated research; neither has received clear-cut support. A third hypothesis is that there is a developmental lag in the lower class so that equating the two groups on chronological age confounds the social class by cognitive-level interaction. In the present study, children were matched on cognitive abilities (preoperational, transitional, and concrete operational) and administered a partial reinforcement task. The main hypotheses that social-class differences would not be found but that cognitive level differences in success on the task and in problem-solving strategies would be found were supported. Implications were made concerning a developmental learning model that includes both qualitative and quantitative changes in abilities.     

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.     

The effects of empathy and outcome on attribution: An examination of the divergent-perspectives hypothesis

Based on the theoretical ideas of Jones and Nisbett (Jones et al. Attribution: Perceiving the cause of behavior. New York: General Learning Press, 1971), and the recent findings of Regan and Totten (Journal of Personality and Social Psychology, 32, 1975, 850–856), the present study assumed that from an attributional standpoint empathic observers and actors are functionally equivalent. On this basis it was predicted that empathic, relative to nonempathic, observers would make outcome attributions which have been typically found for actors themselves: They would attribute an actor's success to dispositional causes, but an actor's failure to situational causes. After instructions to empathize with the target, or to observe him, subjects watched a videotape of a target male attempting to make a good first impression on a female. Subjects later learned that the target had either succeeded or failed at making a good first impression, and were asked to make causal attributions for his outcome. As predicted, instructions to empathize led to dispositional attributions for success and situational attributions for failure, while standard observation instructions resulted in dispositional causal attributions regardless of outcome. The results were interpreted as supporting the contention that differential information processing may sufficiently account for the effects of outcome on causal attributions.     

Achieving consistency: A Study of basketball officiating

This study investigates the characteristics of professional basketball referees which can account for their successful or unsuccessful performance on the court. Several role inactment skills such as achievement via independence contribute to the prediction of this performance. The main determinant identified, however, is at the group or organizational level. Superior referees have less interindividual variance than do average or relatively unsuccessful referees. This result is discussed in terms of the role requirements of performance in this case. Interpersonal consistency of judgment is relied on for matters permitting only consensual validity. Extensions of these findings to other role enactments are suggested.     

Imitative play behavior of children: The importance of model distinctiveness and prior imitative training

The frequency of play behaviors of nursery school and second grade subjects (N = 116) who were imitative of one of two models depended upon the extent to which the two models were previously distinguished by the proportion of reinforcement each delivered, and whether reinforcement delivery was contingent upon imitative behavior. A model, high in distinctiveness and also involved in prior imitative training, engendered reliably more imitations than models high (or low) in distinctiveness but involved in nonimitative (or imitative) training.     

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.     

Optional shift behavior as a function of age and dimensional dominance

An optional reversal-nonreversal shift task for which the relevant color or form cues were either dominant or nondominant was presented to 320 Ss, 6 through 20 years of age. Dominance, as defined in terms of relative cue similarity, was related to initial learning and shift behavior for kindergarten and third-grade Ss; but not for sixth-grade and college Ss. The speed of initial learning and percentage of reversal shifts was related to age when the nondominant dimension was relevant. There were no developmental differences when the dominant dimension was relevant.     

Acquisition and extinction of signaled avoidance as a function of intermittent reinforcement

Signaled, shuttle-box avoidance responding in female rats of the Fischer₃₄₄ strain was examined as a function of four separate contingencies of intermittent reinforcement. In Experiment 1, when avoidance responses during acquisition were reinforced 25% of the time with prompt CS termination, animals responded equally often during acquisition and significantly more often during extinction than animals who received such reinforcement on a 100% schedule. Similar results were found under a trace procedure in Experiment 2 when avoidance responses were reinforced 25% of the time with informational feedback stimuli. In contrast, during Experiment 3, when animals were shocked on only 25% of the trials on which they failed to respond, the level of avoidance responding during both acquisition and extinction was significantly less than it was when animals were shocked on a 100% schedule. Comparable results were found in Experiment 4 when avoidance responses during acquisition averted shock on only 25% of the trials. Thus, intermittent reinforcement contingencies involving response-contingent feedback stimuli and shock have differential effects on avoidance responding during both acquisition and extinction trials under the signaled avoidance procedure.