A microcomputer interface for applications requiring large numbers of subjects

While most small microcomputers are powerful enough to control intricate experiments, a major limitation of many is their limited I/O capability. An interface for the KIM-1 or similar small microcomputer is described that provides for up to 128 or more inputs. The basic components of the interface are a series of shift registers through which the incoming data are manipulated and read by the microcomputer. Provisions are also made to latch the incoming data, allowing detection of very high rates of or even simultaneous data input. The interface is modular in design and can be expanded by increments of eight inputs. Use of the system to monitor a large number of running wheels is discussed.     

Problems and issues in research on gender differences

Problems specific to the study of gender differences — terminology, conceptualization, commonsense beliefs, evaluation and objectivity — are considered before reviewing reports of differences in psychological and social behaviour. Exploration of the interrelation of individual psychological and social variables is followed by reflection on the nature of an adequate theory of gender differentiation.     

Teaching Contempt: the Jew through Christian eyes

The early Fathers, the mediaeval theologians and the architects of the Protestant Reformation are all guilty of denigrating Judaism by teaching contempt. This article explores the legacy of Christian anti‐Judaism by concentrating on the work of theologians, artists and sculptors, all of whom played their part in propagating the negative stereotype of the Jew. Three biblical texts have been chosen for detailed investigation in order to demonstrate how Christian teaching, based on a fanciful and erroneous interpretation of Scripture, has been reflected in modem anti‐Jewish attitudes. The evidence corroborates the view that much of Hitler's antisemitic propaganda was rooted in Christian thought.     

Sacred Violence: the dark side of God

The subject of this essay is the use to which biblical texts which sanction aggression in the name of God have been put by Jews and Christians over the past 2000 years. The divine injunction given to the Israelites to exterminate the Canaanites has been explained in various ways, but without much success. A literal reading of the Hebrew Bible by Jews and Christians, past and present, has led to its exploitation in support of particular ideologies. Given the appalling record of both faith communities in their relationship with those of a different nationality or religious persuasion, it is imperative that the biblical account of the barbarism inflicted by the Israelites on the people of Canaan be subjected to a searching critique.     

Attitudes of African Americans Toward Participation in Medical Research

The underrepresentation of African Americans in medical research is problematic for several reasons, including disparities in health outcomes, differences in metabolism of pharmacological agents, and accurate assessment of health needs and costs. This paper investigates factors contributing to African Americans' lower likelihood of consenting to participation in medical research. In Study 1, three focus groups were conducted to assess concerns about research participation and to generate further hypotheses for questionnaire development. Study 2 presented a hypothetical clinical trial and collected questionnaire data on attitudes about participation. Both studies revealed a greater likelihood to mistrust the medical establishment among African American students. However, suspicion did not contribute to a decreased likelihood of participation. Several recommendations are offered regarding the recruitment of African Americans in research.     

Perceived tachistoscopic duration and early visual processing in preschool children and adults

Two experiments further explored the Avant et al. (1975) finding that stimulus familiarity influences prerecognition processing to generate differences in the apparent duration of tachistoscopic flashes. The first experiment tested for developmental differences in the effects of upright versus 90°, 180°, and 270° rotations of a single letter or number upon the apparent duration of pre- and postmasked 30- and 50-msec flashes with adults and 4- and 5-year-old children. All age groups judged upright presentations to be of briefer duration. These differences in apparent duration were interpreted to index the automaticity of contacts between stimulus inputs and their memory representations. Failure of the children to recognize the letter and number in any orientation indicates that contact between stimulus inputs and memory representations precedes allocation of attention to the presented stimulus. The second experiment explored the influence of spatial structures which are not coded verbally by testing effects of good and poor dot pattern Gestalts on the apparent duration of tachistoscopic flashes. Adults discriminated between apparent durations of good and poor Gestalts but 4- and 5-year-olds did not. Apparent duration differences in the two experiments showed that spatial pattern structure and familiarity with verbal stimuli influence early visual processing in different ways.     

Task grammar and attitude

This paper investigates the ability of perceivers to form impressions of tasks as part of the process of forming a task attitude. This ability is described as being partly given by a syntactic grammar that specifies both the primitive elements of tasks and the rules that structure these elements to form meaningful task impressions. The proposed grammar is shown to generate representations of task structure that can be mapped readily onto task attitudes. The paper concludes with a discussion of the implications of task grammar for research on task attitudes.     

A microprocessor-(Heath ET-3400) based backup control system for laboratory experiments

This paper describes a psychology laboratory experimental control system that utilizes a PDP-11/10 minicomputer to perform both instrument control and data acquisition functions. The minicomputer is backed up by a Heath ET-3400 microprocessor trainer system which performs control functions only. Major components of the hardware and software comprising This system are described.