Motivation, anxiety, and the difficulty of avoidant control

The present research addresses the question of whether avoidant control that is difficult to exercise induces greater physiologic arousal and unpleasant affect than easy-avoidant control or no-avoidant control. Two types of control difficulty were distinguished and factorially varied: (a) control difficulty due to the effortfulness of a controlling activity and (b) control difficulty due to uncertainty about how to exercise control over an unpleasant outcome. To examine responses under conditions where avoiding an unpleasant event is impossible, a cell was included in which subjects were not given the means by which to exercise control. In all but one condition (the high-effort-exercise/high-response-uncertainty condition), when avoidance was expected to be easy or impossible (a) pulse rates were lower, (b) digital pulse volumes were higher (indicating reduced physiologic activity), (c) self-reported anxiety was lower, and (d) ratings of the stressor's unpleasantness were lower than they were when avoidance was expected to be difficult. In the high-effort-exercise/high-response-uncertainty condition, cardiovascular arousal, self-reported anxiety, and shock unpleasantness scores were relatively low, suggesting that control was sufficiently difficult in that condition to cause subjects to "give up." Results are discussed in terms of a recently proposed model of motivation, conceptions of anxiety, and the relation between stress and control.     

Lexical decision in sentences: Effects of syntactic structure

A lexical decision paradigm was used to examine syntactic influence on word recognition in sentences. Initial fragments of sentences were presented visually (CRT display) one word at a time (at reading speeds), from left to right. The string terminated with the appearance of a lexical decision target. The grammatical structure of the incomplete sentence affected lexical decision reaction time (RT). In Experiment 1, modal verb contexts followed by main verb targets and preposition contexts followed by noun targets produced lower RTs than did the opposite pairings (i.e., modal/noun and preposition/verb). In Experiment 2, transitive verb contexts followed by noun targets and subject noun phrase contexts followed by verb targets yielded lower RTs than did the opposite pairings. Similar contrasts for adjective targets did not yield comparable effects in Experiment 2, but did when the adjective was the head of a predictable phrase (Experiment 4). In Experiment 3, noun targets yielded lower RTs than did verb targets after contexts of a transitive verb followed by a prepositional phrase. An account of these effects is offered in terms of parsing constraints on phrasal categories.     

The impact of task difficulty upon perceptions of arousal and goal attractiveness in an avoidance paradigm

Measures of goal attractiveness, self-perceived energization, and self-perceived tension were taken immediately before 55 young male subjects were to perform an easy, difficult, or impossible motor activity in order to avoid an unpleasant noise. Results showed a greater magnitude of goal valence, and higher energization and tension in the difficult task condition than in the easy task condition. Subjects in the impossible task condition reported reduced energy relative to subjects in the difficult task conditions; however, tension and goal attractiveness scores did not differ significantly between these conditions. Theoretical implications are discussed.     

Cerebral lateralization of language in deaf and hearing people

In Experiment 1 neither hearing nor prelingually deaf signing adolescents showed marked lateralization for lexical decision but, unlike the hearing, the deaf were not impaired by the introduction of pseudohomophones. In Experiment 2 semantic categorization produced a left hemisphere advantage in the hearing for words but not pictures whereas in the deaf words and signs but not pictures showed a right hemisphere advantage. In Experiment 3 the lexical decision and semantic categorization findings were confirmed and both groups showed a right hemisphere advantage for a face/nonface decision task. The possible effect of initial language acquisition on the development of hemispheric lateralization for language is discussed.     

A personal view: Counselling and women

This personal view explores a number of gender issues relating to counselling and women clients. Attention is drawn to the lack of content of many training courses in the psychology, sociology and biology of women. Links are drawn between a woman's position in society and mental health. It is argued that counsellors need to be alert and sensitive to women's special needs and to avoid an emphasis on intra-psychic aspects at the expense of acknowledgment of societal pressures.     

Soutien social et abandon de la consultation médicale en clinique de fertilité

L'objectif de la présente recherche est d'étudier le rôle de divers facteurs sociaux et psychologiques qui influencent le processus décisionnel de couples qui abandonnent une démarche médicale en clinique de fertilité. Plus spécifiquement, il s'agit de vérifier si les couples qui abandonnent la démarche médicale se distinguent de ceux qui poursuivent sur le plan de certains facteurs sociaux, relationnels et individuels. L'échantillon se compose de 300 couples qui fréquentent la clinique de fertilité de l'Hôpital St-Luc de Montréal. Les résultats font principalement ressortir l'importance de la taille du réseau de soutien social comme facteur de différenciation des sujets qui abandonnent et de ceux qui poursuivent le traitement. Les deux groupes de sujets différent aussi quant à leur degré de stress, leur désir de procréer, leur perception du désir de procréer du conjoint et leur perception des chances de réussite du traitement. Nos résultats font aussi état de différences sexuelles dans les facteurs prévisionnels de l'abandon de la démarche médicale.     

Developmental changes in memorial comparisons: the effects of stimulus presentation mode.

First graders, fifth graders, and college students made comparative size judgments of either pictures (line drawings) or names (spoken words) of common objects by designating the "bigger" item in real life. Care was taken to equate the picture and word conditions on a number of critical parameters including method of item-pair presentation and activation of response-time intervals. All groups exhibited a symbolic distance effect. While judgments were faster with pictures than words, the magnitude of the difference did not change with age. Previous research suggesting a marked developmental decline in the magnitude of the "pictorial superiority effect" may have confounded reduced memory demands with stimulus presentation mode for young children. Finally, slopes of the symbolic distance functions were found to decrease with increasing grade level, at least from first to fifth grade. This is the first demonstration of an age-related decline in slopes for magnitude comparisons of concrete objects.     

Concept learning by monkeys with video picture images and a touch screen.

Two rhesus monkeys were trained in a same/different task to discriminate digitized computer-stored picture stimuli. The pictures were digitized from 35-mm slides and presented in pairs on a computer monitor. The monkeys were required to touch the pictures and then make a choice response to indicate whether the pictures were identical or nonidentical. The response areas and stimuli were located to the sides of the picture stimuli. Responses were defined and monitored by an infrared matrix touch screen. After learning the same/different task, both monkeys showed performance accuracy with novel picture stimuli similar to that with training picture stimuli. This accurate novel-picture transfer indicates that a same/different concept had been learned, a concept similar to the one they had previously demonstrated in a different apparatus with rear-projected slide stimuli and a response lever.     

Retroactive enhancement of a skin sensation by a delayed cortical stimulus in man: Evidence for delay of a conscious sensory experience

Sensation elicited by a skin stimulus (S) was subjectively reported to feel stronger when followed by a stimulus to somatosensory cerebral cortex (C), even when C was delayed by up to 400 ms or more. This expands the potentiality for retroactive effects beyond that previously known as backward masking. It also demonstrates that the content of a sensory experience can be altered by another cerebral input introduced after the sensory signal arrives at the cortex. The long effective S-C intervals support the thesis that a duration of cortical activity of up to 0.5 s is required before awareness of a sensory stimulus is developed.     

Home, School, and Community Partnerships: Integrating Issues of Race, Culture, and Social Class

The current review is an examination of home–school–community partnerships utilizing an ecological approach to understand the influences of race, culture, and social class. The ecological approach recognizes that families and schools are embedded in communities, and that these settings influence each other and the development of children. The roles of race, culture, and social class in the development of partnerships between the home, school, and community settings are explored. Race, culture, and social class may interact with parent and family attributes, teacher and school qualities, and community context. These factors are often misunderstood either through underinvestigation or lack of integration. The implications for future research, practice, and policy are discussed.