Necker cube reversals in young, middle-aged, and elderly females

This research dealt with the reversing Necker cube illusion and its relationship to age in healthy, community-dwelling female adults. 36 respondents representing three age groups (20-39, 40-59, and 61-80 yr.) were tested. Age was unrelated to experiencing the Necker cube illusion contrary to predictions based on previous research and stimulus persistence theory. The role of sampling effects in gerontological research outcomes is discussed.