Is visual information integrated across saccades?

After subjects established fixation on a target cross, 12 dots were presented parafoveally. When the dots were presented, the subjects made an eye movement to the location of the dots, and during the saccade the 12 initially presented dots were replaced by 12 other dots. The 24 dots were part of a 5 × 5 matrix, and the task of the subject was to report which dot was missing. The data were consistent with other recent studies: subjects could successfully report the location of the missing dot far above chance (54%), whereas performance in a control condition (in which the two sets of dots were presented to different spatial and retinal locations) was almost at chance level (10%). However, a number of control conditions demonstrated that the effect was due primarily to persistence from the phosphor of the cathode ray tube used for stimulus presentation and that little of the visual information integrated was across two fixations. Implications of the results for a theory of integration across saccades are discussed.     

The construction and validation of a juror bias scale

A questionnaire was constructed to measure individual differences in pretrial bias among jurors. The final Likert scale, called the Juror Bias Scale (JBS), contains 17 items—8 that reflect pretrial expectancies that defendants, in general, commit the crimes with which they are charged and 9 that reflect the value attached to conviction and punishment. The scale is internally consistent and test-retest reliable. Scores are uncorrelated with social desirability, moderately correlated with I-E control and belief in a just world, and more highly correlated with authoritarianism. In one validation experiment, student jurors were exposed to three trial presentations in a laboratory setting. Overall, subjects classified as prosecution biased were more conviction prone and adopted a less stringent standard of reasonable doubt. In a second study, community jurors watched one of two videotaped mock trials in a courtroom. Prosecution-biased subjects asserted a higher probability that the defendent committed the crime and rendered a higher percentage of guilty verdicts than defense-biased subjects for one of the two trials. JBS scores were unrelated to all demographic variables, but were significantly correlated with political views. The potential uses and limitations of the JBS are discussed.     

Factor semantics forn-valued logics

In this note we prove that some familiar systems of finitely many-valued logics havefactor semantics, and establish necessary conditions for a system of many-valued logic having semantics of this kind.     

The logic of causal methods in social science

Two kinds of causal inference rules which are widely used by social scientists are investigated. Two conceptions of causation also widely used are explicated — the INUS and probabilistic conceptions of causation. It is shown that the causal inference rules which link correlation, a kind of partial correlation, and a conception of causation areinvalid. It is concluded anew methodology is required for causal inference.     

Social intimacy: An important moderator of stressful life events

Two studies were conducted to explore the role of social intimacy in predicting the individual's response to stress. In the first study the experimenter reinforced the experimental subjects' verbalizations during an interview on a fixed schedule for the first 3 minutes, withdrawing reinforcement for the final 4 minutes. The control group received reinforcement on a fixed schedule for the total 7 minutes. Subjects scoring low on a measure of intimacy disclosed less personal material during the withdrawal period in the experimental condition than in the control condition in contrast to high scoring subjects who maintained their level of disclosure for both parts of the interview. In the second study, previously experienced life change events were assessed. Individuals lacking a current intimacy were found to be prone to higher levels of emotional disturbance especially when many previous negative or few positive life change events had occurred.     

Light source position in the perception of object shape

The apparent relief of monocularly viewed surfaces reversed when the order of light and shade was reversed relative to the position of a lamp observed the moment earlier. The pattern of shading was reversed either by illuminating from a direction opposite to that of the apparent direction of illumination or by inverting the illuminating image relative to the light source. The combination of both of these manipulations restores the original juxtaposition of light source and shading and reestablished accurate perception of relief. These results demonstrate that the perception of the relief of physical surfaces depends upon the remembered position of an apparent light source.     

Group Psychotherapy for University Students: Progress and Problems

The progress of two therapy groups for university students is described. Some difficulties were encountered in their organisation and in the selection of group members. There were also problems regarding confidentiality. On the other hand, the closure of one group during the university vacations did not impede its progress. Such group therapy seemed particularly suitable for students with less severe psychiatric disturbance and for those with adolescent difficulties in separation and individuation. Students with more severe personality disorder or those with a recent history of serious mental illness progressed less satisfactorily.     

Genetic foundation of social behaviour

This contribution was invited by the Editor, and translated by him from the German. Dr Schlegel is a leading exponent of the large group of German workers in the field of constitutional psychology and medicine. He lectured on these topics at the University of Hamburg before being forced to leave his post in the first half of the 1970s by militant students during the German equivalent of the Chinese “cultural revolution”. His work, which fits well into the new school of socio-biology, is relatively unknown in English-speaking countries and, in view of its originality and importance, should be more widely read. Dr Schlegel, in line with socio-biological thinking generally, has not confined himself to a narrow study of correlations between physique and personality, but has also tried to integrate his findings into a wider social context.     

A comparison of observed and reported adult-infant interactions: Effects of perceived sex

Interactions of 16 adults (eight married couples whose youngest child was less than 2 1/2 years old) with a single actor infant, dressed as either a male or a female, were recorded and analyzed in four categories: direction of gaze, facial expression, physical contact with the infant, and toy used. After the interaction period, a 45-minute interview on child rearing was conducted with each member of the couple. Observed interactions were then compared with interview data. The results support previous studies which show that both male and female parents behave differently toward unfamiliar infants on the basis of perceived sex. However, parents, especially mothers, appeared unaware of their differential treatment of male and female infants. These results suggest subtle sex-typing of infants by adults.     

Working through a group's fantasy of the deceased leader's wish for the group's continuation

This paper reflects the working through of a group's fantasy that the deceased group leader wished the group to continue. As in any defense, the fantasy protected members from the pain of the finality of the leader's death. This article reveals the subjective experience concerning the effect of the leader's death on the group and members' intrapsychic struggle to separate and individuate from the deceased leader, while attending to and striving toward the group's continuation. The group's painful and growing individuation enabled the group to follow its own tasks without the spector of the deceased leader.