Effects of being observed on learning following success and failure experiences

In two experiments female subjects performed a task either alone or while being observed by a female experimenter, after which they were told that they had performed well or poorly. On a paired-associates (PA) learning task that followed, subjects who performed in the presence of the observing experimenter required more trials to criterion and committed more errors than those who worked alone only if they had supposedly done poorly on the preceding task. Subjects who had done well on the prior task performed better on the PA task when observed than when alone provided that the preliminary task had also measured verbal learning. A measure of skin conductance indicated increased arousal under conditions of observation on the PA task only after a poor performance on the preceding task. The results are discussed in terms of the drive theory of social facilitation and the conditions under which being observed produces evaluation apprehension.     

The effects of alcohol and extreme provocation on the use of a highly noxious electric shock

Intoxicated and nonintoxicated subjects were given the opportunity to administer a potentially injurious level of shock to an opponent who behaved in either a provocative or an extremely provocative manner. The provocative opponent attempted to administer high-intensity shocks to the subject. The extremely provocative opponent attempted to administer high-intensity shocks and the potentially injurious level of shock. The intoxicated subjects in the extreme provocation condition evidenced the greatest increase in the use of the potentially injurious shock. It was concluded that aggression is a function of the interaction of alcohol consumption and level of provocation.     

Tune recognition with reduced pitch and interval information

Twenty subjects were tested on their ability to recognize simple tunes from which rhythm information had been removed. Only the first phrase of each tune was presented. The purpose of the experiment was (a) to determine whether stimuli containing only high harmonics can evoke a sense of musical pitch, and (b) to provide a set of data in normal subjects with which the performance of deaf subjects whose auditory nerve is stimulated electrically can be compared. Each subject was tested on five sets of stimuli presented in a counterbalanced order. These stimuli were (I) pulse trains high-pass filtered at 2 kHz, with repetition rates in the range of 100-200 p.p.s.; (2) as in (I) but high-pass filtered at 4 kHz; (3) sinusoids with musical intervals compressed, so that the “octave” was a ratio of I:I·3; (4) sinusoids with the musical intervals expanded, so that the “octave” was a ratio of I:4; (5) sinusoids of a constant frequency in which the normal frequency changes were translated into intensity changes, each semitone being represented by a 3 dB change in level. The results indicate that a pattern of intensity changes does not support tune recognition, and that, although the pitch contour alone allows reasonable performance, subjects do use musical interval information in recognizing tunes. Stimuli containing only high harmonics can provide such interval information, and thus can evoke a sense of musical pitch. Preliminary results from a deaf subject stimulated electrically with an electrode on the surface of the cochlea indicate that such stimulation can also evoke a sense of musical pitch. It is concluded that musical pitch information can be carried in the time-pattern of nerve impulses in the auditory nerve.     

Prediction of success or failure in birth planning: An approach to prevention of individual and family stress

Following the view that individual future time perspective is an outcome of the socialization process, it was hypothesized that good contraceptors would display significantly longer future time extension than poor contraceptors. In a Planned Parenthood agency, 25 subjects from each group, constituting nearly the whole clinic population in these categories for a 3-month period, were given the Future Events Test during their clinic visits. The major hypothesis was confirmed, and also a significant tendency towards viewing future events more negatively was found among the poor contraceptors. Demographic data did not discriminate clearly between the two groups, though the poor contraceptors were somewhat younger and had a somewhat higher weekly family income. Use of personality variables in predicting birth-planning success or failure seems more promising than continued reliance solely on the sociocultural approach. Implications for screening and prevention in the interest of the individual, the family, and the community are discussed.     

The effect of social feedback contingent upon a non-social response in seven- and ten-month-old infants

Summary Acquisition of a manipulative response under contingent and non-contingent maternal social stimulation was examined in seven- and ten-month-old infants. Response acquisition was reliably deomonstrated in the case of the ten-month-old infants, but not in the case of the seven-month-old infants. However, despite no acquisition, the performance of the younger infants did differ from that obtained under non-contingent scheduling Examination of visual behaviour to the manipulandum and the feedback source revealed comparable profiles for both ages. The findings are interpreted in terms of the greater difficulty of mixed social/non-social contingency situations and discussed in the context of cognitive constraints on response acquisition in infancy.The conduct of this study was supported by a grant from the United Kingdom Social Science Research Council to H.R. Schaffer, and undertaken whilst the author was a Research Fellow in Psychology at the University of Strathclyde, Glasgow, Scotland.The author is grateful to W.M. Cheyne for advice and to Norman Sharp and Margaret Hunter who assisted with the data collection and analysis.     

The Cost-Reward Model of Helping Behavior: A Nonconfirmation1

A field experiment was designed to test several predictions derived from the Piliavin and Piliavin cost-reward model of helping behavior. Female and male subjects' reported intent to help a hemophiliac in a nearby hospital was unrelated to the costs for helping, the costs for not helping, and the order in which the subjects received the costs' manipulations. The obtained rates of helping were also unrelated to whether or not subjects reported having donated previously. Failure to obtain the predicted results is discussed.     

Effects of peer reporting on cooperative play and aggression of kindergarten children

Kindergarten children were given opportunities to report to their class during “sharing time” the cooperative or friendly behaviors of their peers which had occurred during the day. Children whose cooperative behavior was reported by a peer received a happy face badge as a reward. Later, only peer praise served as a reward for those whose friendliness was mentioned by a peer. Cooperative behavior increased and aggressive acts decreased when peers reported prosocial behavior to the class. A reversal phase, in which unfriendly acts were reported, produced a decrease in cooperation and an increase in aggression. Peer reporting was a natural and inexpensive means of increasing prosocial responses of these children. Anecdotal teacher reports suggested a generalized behavioral improvement.     

The effects of verbal labelling on recognition memory for schematic faces

Four experiments investigated the effects of labelling on the encoding and recognition of schematic faces. In Experiments I and II, hard-to-label (H) faces were recognized better after labelling than after observing, whereas easy-to-label (E) faces were not significantly affected. However, E faces were recognized better after labelling when subjects were instructed to attend carefully to all features of the faces during viewing. In Experiments III and IV, which dealt with each kind of face separately, both E and H faces were recognized better after labelling than after observing. An additional improvement in recognition all of faces was found when labelling subjects knew which label was relevant on each recognition trial and were instructed to use it. It was concluded that (a) a verbal label functions mainly to direct attention to specific facial features during viewing, (b)the effect of the label on recognition is positive or negative depending on whether or not it directs attention to features which are functional for the recognition test, (c) the label also forms part of the representation of the face in memory, and (d) a label may serve as a mediator at the time of testing, but only in the presence of specific cues.     

Figure embeddedness depends on contour orientation

The “oblique effect” was studied using an embedded figures task in which complex patterns and hidden forms were rotated into different orientations. One set of stimuli (Series I) used patterns consisting either entirely of depending on rotation) horizontal and vertical line segments or entirely of obliques. A second set of stimuli (Series II) used patterns composed of horizontal, vertical, and oblique segments in equal proportions. With Series I, both form and complex pattern orientations changed with rotation. In Series II, rotation changed the orientation of the hidden forms, but not the relative proportion of contour orientations in the complex patterns. Significantly longer search times were required to find forms embedded within the obliquely oriented patterns of Series I. There were no significant differences in Series II. These results are discussed in terms of the role contextual contours may play in the detection of differently oriented form.