Context-dependent memory: colour versus odour.

An olfactory stimulus and a visual stimulus were employed in a context-dependent memory study using a prose passage as the to-be-remembered item. Ninety-five university students (aged 17-35 years) learned the passage of prose in the presence of one of the stimuli and were then asked to recall the passage with the original context either reinstated or not reinstated. The results revealed a significant context-dependent memory effect for the olfactory cue but not for the visual cue. They demonstrate support for the effectiveness of odours as context cues and it is suggested that context-dependent memory processes may underlie the formation and retrieval of odour-evoked autobiographical memories.

Reducing the anxiety of children undergoing surgery: parental presence during anaesthetic induction.

OBJECTIVE: The primary aim was to determine whether child anxiety could be reduced by the presence of a parent during anaesthetic induction. Secondary aims involved clarification of the effect of the timing of parental separation, the use of premedication, the seriousness of the surgical procedure, and the flow-on effect of parental anxiety on the level of child anxiety. METHODOLOGY: Subjects were obtained by approaching all parents of children aged from 1 to 8 years admitted for day surgery to a private hospital in Adelaide, South Australia during a 3 month period. Data pertaining to 74 children, representing a response rate of 80.4%, were obtained. Parents were instructed to rate the anxiety of their child for the period immediately prior to separation, and to then rate their own anxiety for the same period of time. RESULTS: Children accompanied during induction were less anxious than those who were not accompanied. Contrary to the belief that child anxiety might be reduced by allowing separation in the theatre holding bay area, it was demonstrated that child anxiety was higher in this group than when separation occurred in the ward. No relationship between premedication or operation severity and either child or parental anxiety was observed. However, parental anxiety was noted to be a significant predictor of child anxiety. Suggestions for a more detailed examination of the relationship between child and parental anxiety in future research were outlined. CONCLUSIONS: It was concluded that there are benefits in allowing parents to be present during anaesthetic induction. However, the potential negative effect of parental anxiety must be acknowledged before parents are allowed to accompany their child as a matter of course.