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  • Title: Clarifying the nature of startle habituation using latent curve modeling.
    Author: Lane ST, Franklin JC, Curran PJ.
    Journal: Int J Psychophysiol; 2013 Apr; 88(1):55-63. PubMed ID: 23361113.
    Abstract:
    Startle habituation is present in all startle studies, whether as a dependent variable, discarded habituation block, or ignored nuisance. However, there is still much that remains unknown about startle habituation, including the following: (1) what is the nature of the startle habituation curve?; (2) at what point does startle habituation approach an asymptote?; and (3) are there gender differences in startle habituation? The present study investigated these three questions in a sample of 94 undergraduates using both traditional means-based statistical methods and latent curve modeling. Results provided new information about the nature of the startle habituation curve, indicated that the optimal number of habituation trials with a 100dB startle stimulus is 13, and showed that females display greater startle reactivity but habituate toward the same level as males.
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