Even though researchers regularly use neutral affect induction procedures as a control condition in their work, there is little consensus on what is neutral affect. This article reviews five approaches that researchers have used to operationalize neutral AIPs: to produce a minimal affective state, in-the-middle state, deactivated state, typical state, or indifferent state. For each view, the article delineates the theoretical basis for the neutral AIP, how to assess it, and provides recommendations for when and how to use it. The (...) goal of the article is to encourage researchers to state their theoretical assumptions about neutral affect, to validate those assumptions, and to make appropriate conclusions based on them. (shrink)

Film clips are proven to be one of the most efficient techniques in emotional induction. However, there is scant literature on the effect of this procedure in older adults and, specifically, the effect of using different positive stimuli. Thus, the aim of the present study was to examine emotional differences between young and older adults and to know how a set of film clips works as mood induction procedure in older adults, especially, when trying to elicit attachment-related emotions. To this (...) end, we use this procedure to analyze differences in subjective emotional response between young and older adults. A sample of 57 older adults and 83 young adults watched a film set previously validated in young population. Their responses were studied in an individual laboratory session to elicit 6 target emotions (disgust, fear, sadness, anger, amusement and tenderness) and neutral state. Self-reported emotional experience was measured using the Self-Assessment Manikin (SAM). Our results show that film clips are capable of evoking positive and negative emotions in older adults. Furthermore, older adults experienced more intensely negative emotions than young adults, especially in response to disgust and fear clips. They also reported higher arousal than young adults, especially in the case of sadness, anger and tenderness clips. Nevertheless, the older adults recovered more easily from the effects of the emotion induction. The young adults reported higher arousal ratings than older adults in response to amusement film clips. On the other hand, this study reflects the importance of controlling the baseline state to study the real strength of mood induction. Overall, current data suggests significant differences occur in emotional response in adult age and that film clips are an effective tool for studying positive and negative emotions in aging research. (shrink)