Canada 2001: Alternative futures for the Canadian communities

The global “problématique humaine” is described in terms of the “grand issues” of population, resources, development in the rich and poor countries, and the environment. Three competing paradigms about the future and their implications for the Canadian communities are examined, and a model is offered showing interrelationships between the different Canadian communities, organizational levels, and various societal/environmental activities. A comprehensive programme of future‐oriented studies is proposed.

This article is a shortened version of a monograph to appear as one of a series entitled Queen's Studies of the Future of the Canadian Communities, published by the Institute of Intergovernmental Relations, Queen's University, Kingston, Ontario. The research was funded by the Donner Canadian Foundation.     

Psychometric properties of the Coping Strategy Indicator (CSI) in a study of coping behaviour amongst malawian students

Abstract

The Coping Strategy Indicator (CSI; Amirkhan 1990) is an inductively derived measure of responses to adverse circumstances. Although seeking to isolate “a few fundamental strategies with wide applicability” (Amirkhan 1990). the initial validation studies were all based on Californian populations. The present study repork findings from completion of the CSI by 415 Malawian students as part of their enrolment health check up. Factor analysis (principal components analysis with varimax rotation) identified three factors with very similar structure and loadings to those identified by Amirkhan, namely, Support Seeking, Problem Solving and Avoidance. As with the initial validation study, there was some evidence of withdrawal and distraction forming identifiable sub-components of Avoidance. The CSI does appear to provide a measure of core coping strategies which is robust across cultural settings, the theoretical implications of which are considered. The influence of factors such as age and gender on CSI scores is discussed     

Mental search processes in problem solving

A new approach to problem solving was applied to multisolution problems in a memory search task. Subjects memorized a list of eight four-letter foods, and then searched mentally through the list for answers to questions. The times between successive answers (IRTs) were recorded along with the answers themselves. This allowed a comparison of two possible memory search strategies: (1) sampling with replacement, and (2) sampling without replacement. The results were largely in agreement with the sampling-without-replacement strategy. However, a more detailed breakdown of the data revealed that most subjects searched through the list in a rigid serial order. Further, an analysis of questions with identical answers showed that the IRTs were very nearly additive. This led to an additive time component model based on the independent summation of (a) read-in time, (b) memory-search time, (c) decision-making time, and (d)response-output time. This approach appeared generally more satisfactory than previous attempts to account for problem-solving behavior.     

STUDIES OF PERCEPTION AND REASONING IN ZAMBIAN CHILDREN

Perception et raisonnement chez les enfants zambiens. — l'A. présente une série de recherches expérimentales qui ont été réalisées ou récemment entreprises par l'Unité de Recherche sur le Développement humain de l'Université de Zambie, dans les domaines de la perception et du raisonnement. II attire l'attention sur ce qu'impliquent, pour tout travail expérimental dans ces deux domaines, les limites qui interviennent du fait de la culture et de la langue, dans la communication qui est faite au sujet du stimulus ou de la tâche requise, et ceci particulièrement quand il s'agit d'enfants qui ont ou vont avoir l'âge de commencer l'école. Dans la mesure où ces difficultés peuvent être réellement surmontées, ce qui a été réalisé jusqu'à maintenant montre quel défi et quelle occasion représente pour la psychologie expérimentale le travail dans des pays en voie de développement. II s'avère également qu'il faut s'attendre à un important décalage temporel avant qu'un changement à large échelle ne puisse prendre place dans les stimuli et les motivations du milieu traditionnel.     

AGE DIFFERENCES IN CUMULATIVE LEARNING OF MEANINGFUL AND MEANINGLESS MATERIAL

Age differences in cumulative learning were explored using a technique developed by Hebb. In the first experiment Finnish subjects recalled messages of English digits and in two subsequent experiments English subjects recalled messages of Finnish and of English digits. The finding from the first experiment was that young subjects exhibited cumulative learning while old subjects did not but it was concluded on the basis of the two further experiments that both age groups could show cumulative learning under the conditions used. An age difference in immediate memory for meaningful and meaningless material is noted and the possibility of increasing vulnerability with age to different forms of interference is discussed.     

The dynamics of multimodal integration: The averaging diffusion model

We combine extant theories of evidence accumulation and multi-modal integration to develop an integrated framework for modeling multimodal integration as a process that unfolds in real time. Many studies have formulated sensory processing as a dynamic process where noisy samples of evidence are accumulated until a decision is made. However, these studies are often limited to a single sensory modality. Studies of multimodal stimulus integration have focused on how best to combine different sources of information to elicit a judgment. These studies are often limited to a single time point, typically after the integration process has occurred. We address these limitations by combining the two approaches. Experimentally, we present data that allow us to study the time course of evidence accumulation within each of the visual and auditory domains as well as in a bimodal condition. Theoretically, we develop a new Averaging Diffusion Model in which the decision variable is the mean rather than the sum of evidence samples and use it as a base for comparing three alternative models of multimodal integration, allowing us to assess the optimality of this integration. The outcome reveals rich individual differences in multimodal integration: while some subjects’ data are consistent with adaptive optimal integration, reweighting sources of evidence as their relative reliability changes during evidence integration, others exhibit patterns inconsistent with optimality.     

The Effect of Sexual Programme Content on the Recall of Foreign Sexual and Non‐sexual Advertisements

This study explored the effect of programme content (sexual and non‐sexual) on the recall of sexual and non‐sexual advertisements. Seventy‐eight participants were allocated randomly to four different groups and viewed either a sexual or non‐sexual programme with either sexual or non‐sexual advertisements placed within. Free recall and cued recall of the advertisements were assessed. The sexual content of programmes impaired advertisement recall, for both free recall and cued recall. Furthermore, advertisements that were of a sexual nature were remembered better than neutral advertisements. There was also an interaction between advertisement type and gender; women remembered more sexual than non‐sexual advertisements, but this was not the case for men. Finally, there was an interaction between programme type and gender, with a marked tendency for men to recall fewer advertisements embedded in the sexual programme than women. Limitations and implications of this research are discussed.Copyright © 2017 John Wiley & Sons, Ltd.     

Visual search and foraging compared in a large-scale search task

It has been argued that visual search is a valid model for human foraging. However, the two tasks differ greatly in terms of the coding of space and the effort required to search. Here we describe a direct comparison between visually guided searches (as studied in visual search tasks) and foraging that is not based upon a visually distinct target, within the same context. The experiment was conducted in a novel apparatus, where search locations were indicated by an array of lights embedded in the floor. In visually guided conditions participants searched for a target defined by the presence of a feature (red target amongst green distractors) or the absence of a feature (green target amongst red and green distractors). Despite the expanded search scale and the different response requirements, these conditions followed the pattern found in conventional visual search paradigms: feature-present search latencies were not linearly related to display size, whereas feature-absent searches were longer as the number of distractors increased. In a non-visually guided foraging condition, participants searched for a target that was only visible once the switch was activated. This resulted in far longer latencies that rose markedly with display size. Compared to eye-movements in previous visual search studies, there were few revisit errors to previously inspected locations in this condition. This demonstrates the important distinction between visually guided and non-visually guided foraging processes, and shows that the visual search paradigm is an equivocal model for general search in any context. We suggest a comprehensive model of human spatial search behaviour needs to include search at a small and large scale as well as visually guided and non-visually guided search.