PVALB and Anxiety: Induction on postnatal day 5 (P5) recapitulated all major phenotypes observed in animals with prenatal Cre-expression, including abnormal social interaction and recognition, avoidance behavior, increased anxiety-levels, impaired sensorimotor gating and somatosensory function, and reduced numbers of PVALB-positive neurons in the somatosensory cortex and the amygdala.