Research has shown that persons who suffer from obsessive-compulsive disorder have more active _____ lobes than persons without the disorder

Immaturity of the ______ part of the brain is the cause of impulsiveness and perseveration

Fill in the blank with correct word

Tong and Caleb are playing with finger paints. Tong takes the blue paint and makes a print of his hand, and Caleb does the same. Tong laughs and pours the red paint onto his foot, and Caleb copies again

Tong dips his elbow into the purple paint and touches it next to the print of his hand. Then Caleb laughs and follows suit. What is the probable age of the boys? A) One year B) Two years C) Six months D) Three years