Word-Picture Matching

PI Name: Scott K Holland,PhD scott.Holland@cchmc.org

Areas: Inf. Fr. Gy, Sup.Temp.Gy, Temp. POT, Ventral Occ. cortex

Program: Mac Stim or CD

Durations: 5 min. 30 sec

Special Equipment: Headphones, Visual Presentation, response buttons

Description: This is a vocabulary identification task that involves semantic skills. By choosing the words and objects that most normally developing children become familiar with before age 3-5, the paradigm was designed to test early developing vocabulary skills. Line drawings of common objects such as a horse, a ball, a cup, are presented in pairs. Simultaneously with the visual images, the name of one object in the pairs is presented auditorily via headphones. Subjects are instructed to press a button in the hand on the same side of the picture that matches the name. Responses and timing are recorded and performance is calculated from correct responses. Thirty-second blocks of picture matching are interleaved with 30 second blocks of presentations of pairs of non-namable, abstract line drawings coincident with narrowband, modulated tones. During this control phase, subjects press the button on the side when the picture matched a prescribed target drawing given during a training session.