What is the Preferential Looking Method?
The Preferential Looking Method (Visual Preference Method) is a proven experimental procedure from visual perception research and developmental psychology.
The PLM was developed to study both the cognitive abilities and the attention and preference for visual stimuli in very young children, as well as in animals.
Since infants are unable to follow verbal instructions or provide verbal feedback, researchers use the natural drive of babies to focus their attention on things they find interesting or novel.
The PLM has many advantages. It is non-invasive, requires no verbal communication, and can be used to answer a variety of questions about cognitive development in very young age groups.
There are certain limitations, such as the possibility of misinterpretations. Nevertheless, experienced examiners achieve reliable results and, in case of doubt, make a correct interpretation through repetition of the examination.