About _____% of those with PTSD will experience psychotic symptoms, such as a loss of contact with reality

Carlito is 5 months old. He loves to grab whatever he can reach, shake it hard, and stuff it in his mouth. What innate characteristic does Carlito share with birds, primates, and many other animals?

a. A desire to explore and manipulate objects b. A fear of novelty and new things c. An understanding of number and the rudiments of language d. An understanding of sibling relationships

Researchers often use factorial designs because:

a. they allow us to see the interaction of factors. b. they more closely approximate the real world. c. both a and b. d. none of the above.