Judged: two independent readers; copy check clear.
psi
psi Psi, or the Processing Speed Index, is a composite score from the Wechsler Adult Intelligence Scale that reflects how well a person can focus attention and rapidly scan, tell apart, and put visual information in order.
Psi, or the Processing Speed Index, is a composite score from the Wechsler Adult Intelligence Scale that reflects how well a person can focus attention and rapidly scan, tell apart, and put visual information in order. It also depends on persistence and planning, and can be affected by motivation, working under time pressure, and motor coordination.