Introduction

The articles in this volume present a unique perspective on participatory evaluation of development programs and projects. The authors are all evaluators and researchers who reside in the South or have extensive Third World experience. They present a broad range of insight into the forms of participation that are feasible and desirable in the evaluation of development activities.     

Signaling and affective functions of conditioned aversive stimuli in an appetitive choice discrimination: US intensity effects

Different groups of rats received Pavlovian aversive conditioning in which US-shock intensity (0.25–1.0 mA) and CS-US correlation (+, 0, ?) were factorially varied. Then, the CS was administered for each group contingent upon the reinforced response in an appetitive choice discrimination. Absolute and ratio measures of speed of running in the presence of the CS showed that, at the start of discrimination training, CS+ suppressed and CS- facilitated performance. However, later in training but prior to any evidence of choice learning, these speed effects reversed, with the magnitude of both the initial and reversed effects being a positive function of US intensity. Consistent with the reversal of speeds, associative (choice) measures showed that CS+ facilitated and CS- retarded discrimination learning relative to CSo and, within limits, these effects were also amplified by stronger USs. The findings suggest that a CS has both affective (motivational) and signaling (associative) functions and that both are influenced by US intensity; however, the CS's affective property is rapidly extinguished in the presence of a hedonicly different reinforcer, while leaving the CS's signaling property largely intact. Hence, the CS functions as a transformed signal for the new (appetitive) reinforcer and facilitates or retards learning by mediating the reinforcer's presence (CS+) or absence (CS-).     

On mediating equity,equality, and self-interest: The role of self-presentation in social exchange

Do individuals conform to various norms of reward allocation not necessarily in response to internal standards but rather, to win approval from relevant others? This study examined the role of self-presentation in mediating equity, equality, and self-interest within reward allocations. It was hypothesized that when others were aware of a subject's behavior, distributions would reflect that person's normative definition of the situation. Subjects allocated a $5.00 payment among themselves and three partners with unequal performance inputs. Informing the experimenter of one's decisions resulted in more equitable divisions, characterizing the employment-productivity relationship between experimenter and subject. When co-workers, defined as peers, were aware of allocations, an equality-based solution was favored. Allocators enhanced their own rewards beyond normative values only when their choices were completely private. Evidence was also found of postdecisional cognitive changes which maintained the belief that one acted justly in giving each partner what he deserved. These findings are consistent with the proposition that individuals maximize their own rewards, defined broadly to include social impression-formation and intrapsychic benefits. Apparently, self-presentational concerns mediate the relative salience of equity, equality, and self-interest in social exhange.     

A method for producing foveal retinal exposures in an awake,task-oriented,rhesus monkey

A method for producing retinal exposures from a laser source in an awake, task-oriented S is presented. The technique allows for the measurement of rhesus monkey visual acuity immediately following exposures.     

A biblical and historical study of homosexuality

This study is a synthesis of biblical and historical material regarding the place of homosexuality in the Christian churches. The author argues that all sexual activity, both heterosexual and homosexual in orientation, should be judged appropriate for Christians when it is a responsible, mutually respectful and loving act between adult persons that is intended to enhance the building and maintaining of whole persons. Therefore, if a person is in all other ways qualified for membership and its contingent responsibilities in the Christian community (or any other community), his or her sexual orientation and behavior should not be a barrier.This study was initially prepared for the Human Sexuality Task Force of the Diocese of Western North Carolina.     

The effects of position in a display upon problem solving

Sixty-four subjects, aged between 15 and 72 years were told how to carry out a problem-solving task, whose difficulty could be varied by changing the position of an index card in relation to a display and control.

The outstanding feature, particularly of the older group's performance was the repetition of the same two kinds of mistake. Their failure seemed mainly due to an inability to rid themselves of their wrong “solutions,” in spite of the constant information indicating the mistake at each position. Whilst these differences between the age groups were hot pronounced at the easiest task, they were at the most difficult.

It is suggested that: Firstly, the procedure of giving a subject the solution to a problem and observing how he reconciles his information with it, though only operating in a circumscribed area of problem-solving, is a genuine example of thinking, and, particularly where certain kinds of mistake can be predicted, it enables the experimenter to gain a more exact impression of what a subject is doing. Secondly, the manipulation of spatial contiguities lends itself to flexible and fairly precise measurement, and the principle might usefully be extended to other variables such as size, time intervals, colour, etc.