Bipolar disorder used to be known as

According to Piaget, the stage of cognitive development between two and seven years of age, in which the individual becomes able to use mental representations and language to describe,

remember, and reason about the world, though only in an egocentric fashion, is the __________ stage. a. concrete operations b. preoperational c. sensorimotor d. formal operations

A sample is selected from a population with ? = 46 and a treatment is administered to the sample. After treatment, the sample mean is M = 48 with a sample variance of s2 = 16. Based on this information, the size of the treatment effect, as measured by Cohen's d, is ____

A) d = 0.125? B) ?d = 0.25 C) ?d = 0.50 D) ?d=0.001