There is contradictory evidence on whether speech production
gets impaired or enhanced when people are restrained from
gesturing. There is also very little research on how this effect
can change with aging. The present study sought evidence for
these by asking young and elderly adults to describe two
different routes on a map in spontaneous speech and when
gestures were prohibited. We found that elderly adults
produced more spatial language when they were restricted to
use gestures compared to their spontaneous speech, whereas
young adults produced comparable levels of spatial language
in both conditions. Young and elderly adults used comparable
levels of gestures in their spontaneous route descriptions. Yet,
only young adults’ gesture use correlated positively with their
spatial language production. Thus, the results of gesture
prohibition on speech production are different for young and
elderly adults.