Cognitive tuning sets: Anticipating the consequences of communication

This paper reviews the literature on cognitive tuning sets: the expectations of having to transmit or receive information. It is shown that having to transmit information leads to a unified and distorted summary being transmitted, a reluctance to receive additional information, a rejection of inconsistent information, and a shaping of the material to accommodate the anticipated audience. As well, the opinions of the transmitters become polarized. It is argued that the receiver condition is probably not the correct control group to use since the outcome depends on the uncontrolled perceived goals. It is suggested that future research should probably treat the multiple effects of cognitive tuning sets separately. An integrated explanation is given in terms of anticipating the consequences of communication. This work was supported by a grant from the Australian Research Grants Scheme.     

Group discussion and first advocacy effects in computer-mediated and face-to-face decision making groups

This study examines whether the first group member to advocate a position in the group publically has disproportionate influence on the group decision, and whether group discussion by computer mail or face-to-face determines the extent of the first advocate's influence. Possible explanations of first advocacy influence were tested in an experiment that allowed simultaneous observation of three independent variables: (1) assignment of first advocate (self-selected/randomly assigned), (2) early discussion before advocacy (discussion/no discussion), and (3) mode of communication (face-to-face/electronic mail). It was assumed that a first advocate effect exists if the group choice is closer to the first advocates' stated positions than to the group's average pregroup preferences. An “influence” hypothesis predicts that first advocates who self-select will be closer to the group decision than average pregroup preferences because these are first advocates most likely to persuade other members of the group. A “listening” hypothesis predicts that first advocates who hear an early group discussion will be closer to the group decision than average pregroup preferences because these first advocates are able to anticipate the group decision as a result of listening to what is communicated in group discussion. The results indicated strong support for the “listening” hypothesis. When groups held early discussions before someone advocated a position, the first advocate effect was observed; when groups did not hold early discussions but began their task by having someone advocate a position, there was no first advocate effect. The data suggest that the content and tone of electronic group discussions was qualitatively different from face-to-face group discussions, but the process of group decision making in both conditions was about the same. The implications of these results for group discussion and computer-mediated group decision making in organizations are discussed.     

Beliefs m Realistic and Unrealistic Control: Assessment and Implications

ABSTRACT Scales were constructed to measure perceived control over controllable events (realistic control) and perceived control over uncontrollable events (unrealistic control). Internal reliability, test-retest reliability, and discriminant validity of both scales were adequate. Study 1 measured perceived personal control over hassles that judges rated on general controllability. For hassles very high in controllability, perceived personal control was related to belief in realistic control but not to belief in unrealistic control; for hassles very low in controllability, perceived personal control was related to belief in unrealistic control but not to belief in realistic control. Study 2 showed that participants high in unrealistic control belief (but not those high in realistic control belief) persevered more on a task that was in part uncontrollable. Study 3 showed that the combination of low realistic control belief and high unrealistic control belief predicted poorer future health, particularly for participants who have reported the experience of many negative events and/or hassles. The conditions under which unrealistic control results in maladaptive outcomes are discussed.     

Effectiveness of a consultation intervention to promote tobacco control policies in Northwest Indian tribes: Integrating experimental evaluation and service delivery

A quasi-experimental replication of an intervention for promoting tobacco control policies in Northwest Indian tribes is described and the process of intervention including issues of collaboration among research institutions and Indian organizations is discussed. The policy intervention was evaluated using a pretest-posttest design wherein 20 tribes that had served as wait-list controls now received the intervention. The intervention comprised a tribal representative attending a kickoff orientation; follow-up visits to the tribes; distribution of tobacco policy workbooks; and phone call consultations. Policy status and stringency were assessed by means of telephone interviews with two key contacts per tribe, and by a count of enacted policies. There were significant pre-post changes in the primary outcome measure, a composite summary score of tobacco policy stringency, and changes were also reflected in enacted policies. The intervention effects observed were similar to those found in the prior randomized trial and suggest a robust, disseminable intervention. Much of the success achieved was attributed to the role of an Indian organization in planning the project and implementing the intervention and evaluation protocols.     

The Caregivers of Stroke Patients: An Investigation of Factors Associated with Depression

Caregivers of the elderly and infirm are often under more stress and report lower life satisfaction than matched groups of noncaregivers. Forty caregivers of stroke patients (usually a spouse) were interviewed an average of 9 months poststroke to determine the factors associated with poorer caregiver adjustment. Four classes of variables were expected to be related to depression in caregivers: level of functioning of the patient, caregiver perceptions of increased work and burden due to the stroke, the quality of the patient-caregiver relationship, and caregivers' interpretations of their situation. Background characteristics were also measured. As predicted, variables in each class were significantly related to depression. Multiple regression analysis showed three significant independent predictors of caregiver depression. Caregivers are more depressed if the patient is more physically impaired, if caregivers report disharmony in the family, and if they have lesser perceptions of hope Ways to apply these findings to the development of interventions to ameliorate caregiver depression are discussed.     

Table of criterion values (β) used in signal detection theory

A table of criterion values for use with the theory of signal detection (TSD) is presented. Criterion values (β) are presented for varying proportions of hits and false alarms. A brief explanation of signal detection theory is given, and the measures for sensory sensitivity (d′) and response criterion (β) are described.     

A Bayesian prediction of four-look recognition performance from one-look data: II

In a recent paper, four-look recognition performance was predicted from one-look (lL) data by Bayes’s theorem, with the entire pattern of two Ss’ four-look data being predicted reasonably well. In the present study, three Ss were run, with the addition that feedback was given and confidence judgments were required. Their task was to identify tachistoscopically presented graphemes A, T, or U. Predictions of four-look performance were made using three orders of lL data matrices, differing in the breakdown of confidence categories. The three matrices led to reasonably accurate predictions. Predictions varied somewhat in accuracy, depending on the order of the lL matrix. The possibility that the variation in predictive accuracy reflected the capacity of an S to combine information received from each observation was discussed. The capacity question is presently under investigation by the authors.