Enhancing Ecological Validity of Gaze-Cueing Stimuli Is Associated With Increased Gaze Following for Older but Not Younger Adults

Gaze following is a core social-cognitive capacity. Previous work has shown that older adults have reduced gaze following relative to younger adults. However, all previous studies have exclusively used stimuli with low ecological validity, leaving room for alternative explanations for the observed age effects. Motivational models suggest that, relative to younger adults, older adults expend cognitive resources more selectively, such that they are less motivated to engage in tasks that are not meaningful or personally relevant. This may explain why their gaze following is reduced when stimuli are low in ecological validity. An expertise-based account suggests that older adults will have enhanced gaze following owing to their greater experience with gaze cues but that this enhancement may only emerge when stimuli are naturalistic and match those that they have more experience with. In the present study, younger (N = 63) and older adults (N = 68) completed a standard gaze-cueing task (static images) and a gaze-cueing task with enhanced ecological validity (videos of shifting gaze). In contrast to past research, both groups showed equivalent gaze following. Notably, in line with motivational model theorizing and experience-based accounts, ecological validity was associated with enhanced gaze following for older but not younger adults. These findings highlight the importance of considering stimulus ecological validity in social-cognitive aging research and provide information regarding the specific types of gaze cues that may be most effective in producing the cognitive and perceptual benefits associated with gaze cues for older adults. Public Significance Statement Most research to date has identified age-related reductions in gaze following but has relied exclusively on static stimuli. The present study revealed no overall age difference in gaze following but an important role of stimuli type. Older (but not younger) adults had enhanced gaze following when stimuli were videos and thus more like those that are encountered in daily life, suggesting older adults may function particularly well in everyday contexts.