In which stage of cognitive development does the conservation concept first appear?

Some people refer to a period of unusual anxiety, reexamination, and transformation during middle adulthood as a(n)

cohort bridge. ecological niche. gender trajectory. midlife crisis.

When psychologists viewed home movies of infants and children who subsequently developed schizophrenia, what did they find?

A) nothing unusual B) all of the symptoms associated with schizophrenia C) evidence for a "splitting" of personality D) unusual motor patterns such as jerky, repeated, and unnecessary arm movements