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Biomedical subjects

C C Presson

Publications and source records attributed to C C Presson.

27 records · Page 2Linked to original sources

Building spatial representations through primary and secondary learning.

The current study examined the conditions under which cognitive representations of spatial information are stored in orientation-specific ways (like pictures) versus orientation-free ways. College students learned simple paths by viewing a map of them (map condition), by walking them while blindfolded (walk condition), or by directly viewing the route from a single vantage point (look condition). Blindfolded subjects then stood on the route in various orientations and made directional judgments to other locations on the route. When subjects learned the route by indirect, symbolic means (map), judgments were quite easy when aligned with the learned map orientation and were difficult if the judgment was not aligned with the learned map orientation. However, when subjects learned the route by more direct, primary spatial learning (walk or look), there were no alignment effects. Thus, subjects treat information from primary (direct) and secondary (symbolic) spatial learning in distinct ways. Learning from a map results in a figural representation that has great precision but a specific orientation. Learning the route more directly results in a representation that is less precise but one that can be used in more flexible ways.

Cognition↗

Predictors of adolescents' intentions to smoke: age, sex, race, and regional differences.

The present study investigated the predictors of smoking intentions among subgroups of adolescent nonsmokers, examining age, sex, ethnic, and regional differences. Both proximal factors specific to smoking and more general, distal factors were successful predictors of intentions to smoke. The similarities in prediction outweighed the differences between demographic subgroups. There were three demographic differences: (1) peer and family smoking levels were more important in predicting intentions for girls than boys; (2) smoking initiation was more of a way of adopting deviant or problem behavior for midwestern than for southwestern subjects; (3) familial smoking models were more related to the intentions of midwestern than southwestern subjects. The theoretical significance of these results and their practical implications for smoking prevention are discussed.

Adolescent↗

The development of map-reading skills.

The present study investigated the development of map-reading skills in kindergartners and second graders. The maps were read either inside or outside the space shown on the map, and they were either aligned with the space or rotated 90 degree or 180 degree. The current maps had only 1 landmark to establish the correspondence to the space. These impoverished maps allowed the examination of 2 variables not previously studied: the proximity of the target to the landmark (near vs. far) and the type of landmark (movable vs. fixed). Consistent with previous research, at both grades subjects were able to extract information from the maps to guide search. When the maps were rotated, the younger subjects made "egocentric" errors on the inside reading trials but not on the outside trials. At both grades, most errors preserved the near/far relation to the landmark. Thus, children extracted critical (near/far) information from the maps instead of creating a mental map which was then mentally projected in space.

Child↗

Social image factors as motivators of smoking initiation in early and middle adolescence.

The social image of the smoker may be particularly important for the process of adolescent smoking initiation. With that in mind, the present study had 2 goals: (1) to assess the social image of cigarette smoking among early and middle nonsmoking adolescents, and (2) to determine whether that social image serves to motivate smoking initiation. Based on considerations of self-esteem and susceptibility to social influence, social image factors were predicted to be related to intentions to smoke more for early adolescents and for girls. Results indicated that the social image of both male and female smokers was an ambivalent one for both early and middle adolescents. Smoking models were rated as having many undesirable qualities, but also several social assets. In terms of the relationship of the social image to smoking intentions, early adolescent girls had intentions that were best predicted by the perceived negative qualities of smoking. For middle adolescents, smoking intentions were related to the positive social assets of smoking, especially interest in the opposite sex. These results suggest that prevention strategies for early adolescent girls focus on the negative results of smoking. On the other hand, strategies for middle adolescents should either attack the positive image of the smoker or provide alternative means of self-image improvement.

Adolescent↗