Differences in frontal and limbic brain activation in a small sample of monozygotic twin pairs discordant for severe stressful life events.

Although not part of our a priori analysis plan, twin pairs discordant for stress also showed a trend for differences in depression symptoms counts and total count of anxiety, depression, and antisocial symptoms (see supplemental data ); However, this sample is best described as stress discordant since over half of the pairs were concordant for 0 or 1 of each type of mental health symptom.

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