Table I. Potential early markers and risks. CPT: continued performance test.

• Family history

• Perinatal complications

• Subtle developmental delay

• Subtle deviation on psychometric performance

• Mild behavioral abnormalities

• Stress, immigration, use of drugs?

• Depressed mood and social decline

• Attenuated or transient psychosis

• Electrophysiological and attention (CPT) markers?

• Late paternal age at gestation