Researchers can tell if an infant prefers a visual stimulus, such as a face, to another stimulus by

Question

Quizplus · Accepted Answer

Tracking how long an infant looks at each stimulus is the best choice as it is a common method used in research to determine an infant's preference for visual stimuli. This is because infants tend to look longer at stimuli that interest or engage them. Observing the infant's crawling behavior would not necessarily indicate their visual preferences, and counting how many seconds it takes for the infant to smile at each stimulus is not a reliable method as infants can smile for various reasons not related to their visual preferences. Asking the infant's mother to read the child's facial expression is also not reliable as mothers may have biases or may not be able to accurately interpret their infant's expressions.

Researchers Can Tell If an Infant Prefers a Visual Stimulus