California Verbal Learning Test (CVLT)

The California Verbal Learning Test (CVLT) is a measure of verbal learning and memory. In this task, a list of 16 items, with four words from each of four categories (fruits; herbs and spices; clothing; tools) is presented. The list is presented five times, and the participant is instructed to recall as many words as possible from the list following each presentation. Subsequently, a second list consisting of 16 items is presented (the interference list). After hearing the interference list, the subject is asked to recall as many items from the original list (short delay free recall), and to recall as many items from each of the semantic categories (cued recall). After a time interval, long delay free recall of the items is assessed, following by an assessment of cued recall and recognition of the items. Performance on each trial is measured by the number of correctly recalled words, perseverations, and intrusions.