Spatial and feature-based memory representation in free-flying homing pigeons

The memory-based recognition of a goal is a capacity well demonstrated in birds, and understanding this ability often involves determining the relative importance of spatial and feature information in representing the properties of a goal. However, surprisingly little avian research has examined goal recognition in a field setting. Here, we demonstrate that homing pigeons can be successfully trained outdoors to fly to and land on a goal platform located in an array of other platforms at a distance on the order of 100 m. They can do so under conditions when the properties of the goal are stable in time as well as when the properties of the goal periodically change; the latter condition indicating that homing pigeons can rapidly adapt their memory representations to take into account changing environmental conditions. When probed for preferential use of either spatial (location) or feature-based (color) information, the pigeons demonstrated an indifferent capacity to use both independent of task demands. The homing pigeon memory systems that support goal recognition appear to be opportunistic with respect to the information exploited, using spatial and feature information equally to guide their behavior. Therefore, and despite strong natural and artificial selection for navigational ability, spatial information is no more important than feature cues in representing a goal location for homing pigeons flying outdoors.     

Parent,teacher, and peer ratings of physically abused and nonmaltreated Children's behavior

Behavior ratings by parents, teachers, and classmates of physically abused fourth to sixth graders, identified from the New York City Maltreatment Register, and case-matched classroom controls, showed substantial concurrence among informants: Parents and teachers both rated significantly more behavioral disturbance in the abused children, and peers' ratings were significantly correlated with adults' ratings, especially those by teachers. Children's exposure to spouse or partner physical abuse, which had a substantial prevalence among both child-abusing and control families, reduced the difference in disturbance ratings between children who were themselves physically abused and those who were not. Overall, we conclude that physically abused children show pervasive behavioral disturbance, in that parents, teachers, and classmates all see higher levels of behavior problems and lower levels of socially desirable behavior in them compared to their nonmaltreated peers.This research was supported in part by research grant R01MH38814 and Clinical Research Center grant MH30906 from the National Institute of Mental Health. The authors thank the New York City Child Welfare Administration, especially Terry Weiss, for facilitating access to the Maltreatment Register; the NYC Board of Education for access to schools; and the many participating superintendents, principals, and teachers. Some preliminary data were presented as a poster at the Meetings of the American Academy of Child Psychiatry, New York, 1989.     

Faculty attitudes about student evaluations and their relations to self-image as teacher

With the worldwide implementation of students’ evaluation of teaching (SET), faculty attitudes and trust in students’ feedback as well as possible defensive (i.e., self-protective) motivations seem most relevant to the facilitation of the primary organizational goal of SET, namely, teaching improvement. A questionnaire—administered to 2241 faculty members of all ranks in two dozen varied institutions—measured positive attitudes and trust, on the one hand, and beliefs in salient negative faculty SET myths, on the other hand. The most widely-held negative attitudes concerned student fallibilities: vindictiveness; lack of maturity; and negative evaluations of low-achieving students. Despite believing in myths, more than half of the respondents reported trusting SET, thought that it accurately reflected their teaching performance, and considered SET-based feedback useful. A derived index comparing self-evaluations to reported students’ evaluations demonstrated that more than a third of the participants rated their own quality of teaching higher than the ratings they reported typically receiving from their students. This ‘underestimated’ group believed more intensely in SET myths and mistrusted it, which suggests a possible self-protective motivation underlying faculty attitudes. A subgroup of 9% felt strongly underestimated by their students, and a series of comparisons gave clear indications that, for this group of hard-core disgruntled faculty members, the administration of SET questionnaires and the provision of SET feedback are counter-productive. Insights from this research might encourage academic administrations to improve the implementation of SET measurement to increase faculty receptiveness and trust.     

Effects of diversity versus segregation on automatic approach and avoidance behavior towards own and other ethnic groups

We present the results of a study in which we measured automatic intergroup behavior and evaluations in ethnic majority and minority group members. We focus our attention on the level of segregation and diversity of immediate life contexts as indicators of outgroup exposure. Specifically, Dutch ethnic minority and majority students enrolled at ethnically segregated and diverse schools completed a measure of automatic approach and avoidance behavior and reported explicit intergroup attitudes. The research is framed into prevailing theories in the field: Social Identity Theory and System Justification Theory. Results of our study suggest that segregation of minority group members' immediate life context may be an important moderator of evaluations as well as approach and avoidance behavior toward ingroup and outgroup. In particular, minority members in segregated schools showed an approach bias towards their ingroup, whereas minority members in diverse schools showed an approach bias towards the majority outgroup.     

Prayer,Hij # b and the Intif # da : The influence of the Islamic movement on Palestinian women

As Islamic movements are often perceived as only political movements, their effects on society are often overlooked. Based on empirical evidence, this article attempts to show the nature of the influence the Islamist movement in Palestine had on Palestinian women in particular. It formulates such questions as how do the Islamists view the role of women in society according to their political programs and how did Palestinian women respond to these demands in the decade between 1986 and 1996. In personal interviews conducted 1995/96 in the West Bank and Gaza the author asked women from different areas and social backgrounds about their religious attitudes, the importance of religion and their views of the Islamic movement especially during the Intif # da .     

Preference for sex of child: a research update

This study was undertaken in order to determine if various cultural influences since the time of the 1970 Hammer study have significantly altered the view in our society today in regard to the disadvantage of the female role. The study involved asking 558 subjects to fill out a 1-page questionnaire that asked: 1) If you knew for sure that you could have only 1 child, would you prefer that child to be a boy or a girl? and 2) If it were possible for you to be reborn and you could have your choice, would you prefer to return as a male or as a female? Each question also asked for the respondent's reasons for responding as he or she did. In comparing the results of the 1970 study, what seems to be clear is that the perceived female role disadvantage appears to be significantly diminishing in our society, at least as far as most females are concerned. This is especially evident in unmarried college females, for whom there has been a rather dramatic change since 1970. In 1970, this group significantly preferred a male child, whereas in 1986 they significantly preferred a female child. The fact that these females significantly prefer to be reborn as a female rather than a male suggests that the perception by this group of the diminishing of the female role disadvantage is quite substantial. The results for the other groups are much less clear. The clear changes that have taken place since 1970 in regard to female role disadvantage lend more support to the Adlerian view over the Freudian view that such roles are more culturally than anatomically determined, and are therefore amenable to continuous change.     

Coping with Missile Attack: Resources, Strategies, and Outcomes

ABSTRACT The coping process was examined in a group of Israeli subjects experiencing SCUD missile attacks during the Persian Gulf War. We were interested in examining the relationship of coping resources, optimism, perceived control, and coping strategies, to anxiety, to physical symptoms, and to cognitive functioning during a real crisis. Data were gathered via structured questionnaires in the midst of the Persian Gulf War (February 1991) on a sample of 261 adult respondents residing in northern Israel. Although people reported a mixture of palliative and active coping strategies, it was the use of palliative coping efforts that predicted greater anxiety and physical symptoms. Subjects with greater coping resources used more palliative and active coping strategies and had higher cognitive functioning. However, active coping did not predict any of the negative stress reactions (i.e., anxiety and physical symptoms). People who perceived being in control of the situation reported using less palliative coping and fewer symptoms. That active coping did not predict negative stress reactions may have been a function of the severity of the stressor, and the resultant high levels of anxiety that were engendered. Overall, these findings do point to a different coping process in a grave and ongoing disaster situation than that reported in reaction to more normal life events.     

The truths of logic

Several accounts of logical truth are compared and shown to define distinct concepts. Nevertheless, conditions are given under which they happen to declare exactly the same sentences logically true. These conditions involve the variety of objects in the domain, the richness of the language, and the logical resources available. It is argued that the class of sentences declared logically true by each of the accounts depends on particularities of the actual world.     

The importance of Hinayāna and Mahāyāna

Volume 1. Hinayāna. Den tidlige indiske buddhisme. Volume 2. Mahāyāna. Den senere indiske buddhisme. Christian Lindtner, 1998, Copenhagen, Spektrum/Forum Publishers, Vol. 1: 228 pp., ISBN 87 7763 170 6; Vol. 2: 256 pp., ISBN 87 7763 174 9     

Real-life outgroup exposure,self-reported outgroup contact and the other-race effect

People are better at recognizing faces from their own racial or ethnic group compared with faces from other racial or ethnic groups, known as the other-‘race’ effect (ORE). Several theories of the ORE assume that memory for other-race faces is impaired because people have less contact with members of other racial or ethnic groups, resulting in lower visual expertise. The present research investigates contact theories of the ORE, using self-report contact measures and objective measures of potential outgroup exposure (estimated from participants' residential location and from GPS tracking). Across six studies (total N = 2660), we observed that White American and White German participants displayed better memory for White faces compared with Black or Middle Eastern faces, whereas Black American participants displayed similarly equal or better memory for White compared with Black faces. We did not observe any relations between the ORE and objective measures of potential outgroup exposure. Only in Studies 2a and 2b, we observed very small correlations (rs = −.08 to .06) between 4 out of 30 contact measures and the ORE. We discuss methodological limitations and implications for theories of the ORE.