Conditioned approach and withdrawal behavior in pigeons: Effects of a novel extraneous stimulus during acquisition and extinction

Three experiments examined the effects of complete removal of reinforcement and of the introduction of a novel stimulus on conditioned approach and withdrawal behavior exhibited by pigeons in an autoshaping paradigm. Experiment 1 indicated that complete omission of food from the experimental situation resulted in the gradual disappearance of both approach and withdrawal behavior in subjects that had received either explicitly paired or explicitly unpaired conditioning. Subsequent presentation of a novel visual stimulus reinstated both approach and withdrawal. Experiment 2 replicated these findings in a within-subjects, discriminative paradigm. In Experiment 3, presenting the novel visual stimulus during acquisition when approach and withdrawal behaviors were asymptotic did not produce significant disruption of performance. These data suggest that removal of reinforcement leads to the disappearance of withdrawal as well as approach performance, and that subsequent presentation of a novel stimulys reinstates whatever behavior was dominant prior to extinction—a finding that seems analogous to results of experiments concerning proactive interference.     

Disorders of oculomotor scanning and graphic orientation in developmental Gerstmann syndrome

A patient with developmental Gerstmann syndrome who experiences great difficulty in performing tasks requiring visuoconstructive and reading abilities is described. Neuropsychological assessment revealed normal range verbal abilities but severe deficits in directional orientation, finger differentiation, calculational ability, copying, and reading ability. Achievement in reading was measured at the sixth-grade level despite the fact that this patient is a third-year college student. Using infrared photoelectric sensors, we monitored the horizontal saccades of this patient while reading from a standardized reading test. Fixation durations were not abnormal. However, instances of reverse-staircase movement were exhibited. While reading from an inverted test, she showed a normal eye-movement pattern (although in the reverse direction since the task now called for right-to-left saccades). The processing of spatial information in this patient is severely disturbed and this may account for the apparently abnormal oculomotor scanning, an “irrepressible tendency” to move her eyes in a right-to-left direction.     

Job satisfaction among students in work education programs

Data were collected from 1016 students in grades 9–14 from 50 work education programs. Data were also collected from 696 similar students who held part-time jobs but were not participating in work education programs. Participating students were significantly more satisfied with their jobs than were the nonparticipating students. Group atmosphere, availability of adult role models, meaningfulness of work roles, and availability of feedback accounted for much of the variation in job satisfaction among students.     

The decrement in conditioned fear with increased trials of simultaneous conditioning is not specific to the simultaneous procedure

Three experiments using a conditioned punishment paradigm with rat subjects examined the possibility that the nonmonotonic acquisition function previously found to characterize simultaneous conditioning was due to the noninformative nature of the conditioned stimulus (CS). In Experiment 1 the suppressive effects of a CS previously presented with an unconditioned stimulus (US) in a simultaneous and forward (informative) manner were compared following 20 and an additional 60 conditioning trials. Excitatory conditioning similarly diminished with increased trials for both the simultaneous and forward procedures. Experiment 2 employed a between-groups design. Simultaneous, forward, and trace conditioning procedures were compared following 20 or 100 trials. Each of the three 100-trial groups showed less resistance to extinction than their 20-trial counterparts. Experiment 3 determined that the decrement in excitatory conditioning for the 100-trial groups was not due to the greater number of US presentations, per se, but rather to the number of CS-US pairings. The nonmonotonic acquisition function observed with all three conditioning procedures indicated that informational factors were not responsible for the decrement observed in simultaneous conditioning. The pattern of results suggested that subjects receiving extended conditioning trials were better able to discriminate between training and testing.     

The relation of esteem and social class to self-occupational congruence

The relation of self-esteem and social class to congruence with chosen occupation (the incorporation score) was analyzed by ANOVA and a priori contrasts. Fifty-four accounting majors were differentiated from 58 non-accounting, business majors on the basis of their ideal-self-accounting congruence (p < .01) and their self-accountant congruence (p < .05). Both high- and low-esteem accounting majors' congruence scores for accountant were higher than other S's accountant congruence, and high-esteem accounting majors had the highest congruence (p <.05). Working class accounting majors had higher congruence than middle class accounting students (p <.05). The implications of the findings for theory development and counseling were discussed.     

Does everybody like a liker?

The primary hypothesis examined was that people giving positive evaluations are themselves regarded as more attractive than when they give negative evaluations. This research tests whether this holds when reciprocity is not at issue. Subjects in six experiments were presented with stimulus persons who varied in the proportion of positive to negative evaluations they gave of various attitude objects (political figures, cafeteria workers, cities, movies, and college courses). Giving predominantly positive evaluations did in fact lead to greater liking of the stimulus person in each experiment. This finding held over (1) audio or written interviews with the stimulus persons, (2) a variety of classes of attitude objects, and (3) both within-subject and between-subject designs. Greater liking for likers occurred even controlling for attitude similarity.     

Warned reaction times of sociopaths

A warned reaction time (RT) task was employed with eight male sociopaths and eight normal male Ss. A warning light appeared at a variable interval preceding a light to which the S responded with a key press. All Ss received both a regular and an irregular series with warning intervals of 1, 2, 4, 8, and 16 sec. In the regular series, blocks of intervals were presented in an ascending order. In the irregular series each interval followed every other interval equally often. Sociopaths obtained reliably slower RTs than did control Ss, showing a constant decrement across all intervals in the two kinds of series.     

Extent,multiplying, and proportionality rules in children's judgments of area

The study examined children's use of multiplying and proportionality rules in judgments of area. In two experiments children judged the area of rectangles. Seven-year-olds used linear extent as an index of area. Eight- and nine-year-olds replaced the extent rule with the height × width rule. In a third experiment 8-through 11-year-olds were presented with a rectangle and a horizontal line representing the width of a second rectangle. Children were asked to indicate the height that would make the second rectangle equal in area to the first. The correct response was proportional to the product of the ratio of the widths of the two rectangles and the height of the first rectangle. Graphical and statistical analyses indicated that children applied the ratio rule to these judgments. The implications for Piaget's theory of cognitive development were discussed.     

The discourse of thought-disordered schizophrenic children

The conversations of two thought-disordered schizophrenic children and two age- and sex-matched normal children were studied in three different contexts. Cohesive relations and retrieval categories were analyzed. The thought-disordered schizophrenic and normal children demonstrated divergent patterns of discourse. These patterns closely paralleled those previously reported for adults by S. Rochester and J. R. Martin (1979, Crazy talk: A study of the discourse of schizophrenic speakers, New York: Plenum) for schizophrenic and normal adults, although some discrepancies were also observed. Recommendations for future research are offered.     

Interest as a predeterminer of the GSR index of the orienting reflex

Participants in the experiment were selected from among the membership of three university recreational clubs, surfing, fishing, and chess. Participants were further restricted to those having an exclusive recreational interest. Sixteen students selected in this manner were shown slides depicting scenes related to each of the three interests as well as unrelated filler slides. Students displayed significantly larger GSRs to slides depicting their recreational interest as compared to the other recreations and the filler slides. Results were interpreted as reflecting the expression of an OR induced by a significant stimulus.     

Some conditions for the dissociation of consummatory and instrumental behavior in rats

To investigate whether consummatory and instrumental behavior depend upon different motivational factors, rats were trained to press a bar for saccharin solution, then given various treatments designed to reduce the palatability of saccharin, and finally tested for bar-pressing in extinction and for free intake of saccharin. Prefeeding with dextrose, prefeeding with saccharin, and association of saccharin with injections of lithium chloride all reduced intake of saccharin compared to control treatments, but only prefeeding with dextrose also reduced barpressing in extinction. Thus, performance of an instrumental response may depend upon need for food rather than appetite for it.     

Communicating the reasons for social rejection

Two studies examined the pattern of reasons given for rejecting dates and how they reflect concerns of the rejector. Study One examined retrospective accounts of rejection. Rejectors often reported withholding the reason for rejection from the rejected person. A content analysis of the reasons communicated to rejected persons was performed using Weiner's (Journal of Educational Psychology, 1979, 71, 3–25) attributional dimensions of locus, controllability, and stability. The stated reasons were found to be primarily impersonal, uncontrollable, and unstable. Study Two examined rejectors' willingness to communicate certain types of reasons. The true, privately held reasons for turning down dates were systematically varied as to locus, controllability, and stability. The types of reasons subjects offered to rejected persons were consistent with Study One. Reasons for refusal were less likely to be revealed when they related to the appearance or personality of the rejected person, particularly when the personal reasons were uncontrollable and stable. Rejectors were not as forthright when they controlled the reason for rejection as when they lacked control. The rejectors' actions were interpreted as being self-presentational, reflecting concerns about rejected persons' emotional reactions, expectancies for the future of the relationship, and blame for rejection.     

Population states and eigenstructure: A simplifying view of Markov learning models

The structure of a Markov learning model can often be appreciably simplified by analyzing the eigenstructure (eigenvectors and eigenvalues) of its transition operator, and by focusing on population states representing distributions of individuals rather than on subject states representing individuals. This view often produces considerably simpler “reduced” models, which are equivalent to the originals in that they make identical predictions. We apply these reduced representations to determine the number of estimable parameters a model supports and to answer questions of model identifiability: when two models are mathematically equivalent and when they are likely to predict observations in practice distinguishable on the basis of limited data.     

The perception of interleaved melodies

If the notes of two melodies whose pitch ranges do not overlap are interleaved in time so that successive tones come from the different melodies, the resulting sequence of tones is perceptually divided into groups that correspond to the two melodies. Such “melodic fission” demonstrates perceptual grouping based on pitch alone, and has been used extensively in music.Experiment I showed that the identification of interleaved pairs of familiar melodies is possible if their pitch ranges do not overlap, but difficult otherwise. A short-term recognition-memory paradigm (Expt II) showed that interleaving a “background” melody with an unfamiliar melody interferes with same-different judgments regardless of the separation of their pitch ranges, but that range separation attenuates the interference effect. When pitch ranges overlap, listeners can overcome the interference effect and recognize a familiar target melody if the target is prespecified, thereby permitting them to search actively for it (Expt III). But familiarity or prespecification of the interleaved background melody appears not to reduce its interfering effects on same-different judgments concerning unfamiliar target melodies (Expt IV).     

Motivational determinants of coalition formation

Coalition preferences of 300 male and female subjects were ascertained under varying motivational conditions. Two of the experimental conditions repeated the typical three-person coalition paradigm, with a monetary reward (extrinsic motivation) offered for the winning of a luck-determined game. In a third condition, skill rather than luck influenced the outcome and no monetary reward was given for winning (intrinsic motivation). Two additional conditions examined coalition preferences in a mixed-motive situation, with either a small or a large monetary reward offered for winning a skill-related game. In the extrinsic motivation condition, the low and the medium resource persons typically desired to coalesce, contrary to the wishes of the excluded, high resource player. In contrast, the coalition between the low and the medium resource persons also was preferred by the high resource player in the intrinsic motivation condition. Coalition conflict was intermediate in the mixed-motive conditions. In sum, it was demonstrated that coalition formation and interpersonal conflict are dependent upon the motivational determinants of group activity.     

Immediate and delayed reinforcers for flavor preferences in rats

When rats received, on alternate days, one flavored saccharin solution for 5 min and a differently-flavored saccharin solution for 60 min, they showed no consistent preference between the flavors. On the other hand, when they received one flavor in a concentrated saccharin solution and a different flavor in a dilute one, they preferred the first flavor in tests with saccharin concentration held constant; also, rats learned to prefer a flavor immediately followed by a concentrated saccharin solution to one followed by nothing. They showed no consistent preference, however, between a flavor followed 30 min later by a concentrated saccharin solution and one followed by nothing; but they learned to prefer a flavor followed 30 min later by a dextrose solution to one followed by nothing. In other words, consummatory responding did not reinforce flavor preference, sweet taste did so with immediate but not delayed reinforcement, and nutrition did so even with delayed reinforcement.     

Effects of sex of subject,sex of stimulus cue,and androgyny level on evaluations in work situations which evoke sex role stereotypes

This study examined the differential evaluation of male and female stimulus cues and the effect of subject's androgyny level on their evaluations. Male and female college students filled out the Bem Sex Role Inventory (1974) and responded to set of five in-basket tasks taken from the Rosen, Jerdee, and Prestwich (1975) study of male managers. Sex of subject, sex of stimulus cue in the in-basket tasks, and androgyny level were varied in a series of 2 X 2 X 3 analyses of variance. On some tasks, male and/or female subjects responded in a sex role stereotyped manner. There were no effects for androgyny level. The discussion focused on circumstances under which stereotyping occurs and implications of the study.     

Focus of attention and causal attributions of actors and observers

An experiment was conducted to test the hypothesis that actors' and observers' causal attributions are a function of their focus of attention. In the presence of observer-subjects, actor-subjects made a choice among several art works in a supposed decision-making study. The experiment was a 2 × 2 × 2 factorial design with the factors (1) source of attribution (actors, observers); (2) camera (actor videotaped, actor not videotaped); and (3) situational stability (stable, dynamic environment). As predicted by the focus of attention-causal attribution notion, it was found that actors attributed more causality to the situation than observers under normal circumstances, when the camera was not operative, but that videotaping the actor reversed the usual actor-observer pattern such that actors attributed less causality to the situation than did observers. Further, when the environment was stable, actors attributed more causality to the situation in the no camera condition than in the camera condition, while observers attributed less to the situation in the no camera conditions than in the camera conditions. Additionally, both actors and observers attributed more causality to the situation when the environment was dynamic than when the environment was stable.     

A case report of pathological rule-governed syllable intrusion

A detailed analysis of a unique speech disturbance, marked by the frequent appearance in the speech stream of a meaningless intrusive syllable, is presented. Following a lengthy thoracic surgery, an American English speaking patient began to speak with non-English prosodic patterns, which evolved to a conspicuous intrusion in his speech of the syllable /sis/. This syllable and its variants were attached to words in a manner which conformed to the regular phonological rules in English (for formation of plural, possessive, and third person singular morphemes). The distribution and frequency of the intrusive syllable are described, and possible explanations for the abnormal occurrence of this particular syllable are discussed.     

Stimulus specificity in avoidance learning

The present experiments address the issue of stimulus specificity in fear and avoidance learning. First, it was established that light stimuli are effective warning signals (WS) in shuttle avoidance. Then light stimuli were shown to produce conditioned suppression in the conditioned emotional response situation comparable to that produced by noise conditioned stimuli. Finally, the effectiveness of noise onset and noise offset as feedback signals was tested. This was assessed under conditions of immediate and delayed termination of a light WS. Delayed termination of a light WS interfered with avoidance learning and the introduction of noise offset as a feedback signal enhanced it. The only demonstration of stimulus specificity was the failure of noise onset to function as a feedback signal.