Figure 1.

Structure of the Wechsler Adult Intelligence Scale (WAIS)-III. To shorten administration time and assess functional outcome in patients with schizophrenia, we previously developed the WAIS-III Short Form using the Similarities and Symbol Search components (red circles) (23). The administration time was shortened to approximately 10 min. Letter-Number Sequencing and Symbol Search (○) are not used for calculation of verbal intellectual quotient (VIQ) and performance intellectual quotient (PIQ), respectively.