The experimental induction of jealousy threat in a specific situation, using an imagery task, affected subjects' perceptions of themselves and of their romantic relationships, and influenced their emotions. Jealousy-provoking situations increased subjects' perceptions of themselves as jealous in their relationships, and their perceptions of themselves as more emotionally involved in the relationship relative to their partners. Jealousy threat decreased levels of perceived security and stability of the relationship and self-perceived feelings of attractiveness and acceptability to partners. These jealousy-provoking scenes also elicited a complexity of emotions: decreased joy and an increased series of negative emotions. When subjects imagined themselves in a high threat condition, where the loss of their partners seemed imminent, they evaluated their relationships as significantly less secure/ stable, and reported greater intensities of surprise, fear and distress in contrast to the low threat scenes. Dispositional measures of self-esteem and jealousy did not significantly predict jealousy-induced relationship perceptions, although these person variables were somewhat correlated with subjects' ratings of characteristics of their relationships in general. It was concluded that situational variables, such as level of jealousy threat, affect both emotions and cognitions related to the self and relationship based upon the salient characteristics of the situation. Some evidence was found for an interactional explanation of romantic jealousy which requires further investigation.
It is well known that in convergence insufficiency (CI) prism adaptation is reduced in response to base-out (BO) prisms at near. There have also been some suggestions in the literature that adaptation is reduced at other distances as well. The present data show that in CI adaptation is not only reduced in response to BO at near, but also in response to base-in (BI) at near and for both BI and BO at distance. This raises the interesting question whether distance adaptation becomes reduced because of reduced near adaptation or whether these subjects have a generally reduced horizontal adaptation mechanism.
As part of a study on subjects with convergence insufficiency (CI), their vertical and horizontal vergence adaptation was assessed and compared with age matched controls in order to investigate whether the horizontal adaptation system can be regarded as being independent of the vertical adaptation system. Using a flashed Maddox rod technique horizontal vergence adaptation was found to be reduced in CI subjects whereas no difference could be found in vertical adaptation. These results confirm that the vertical and horizontal adaptation systems can be treated as independent mechanisms.
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