Few problems are associated with having sexual intercourse during the first 8 months of pregnancy

Suppose, in an investigation, the frequency of positive hits was twice that of

misses. The correlation coefficient would be (a) +1.0 (b) 0 (c) -1.0 (d) not enough information is given to answer the question

Piaget's stage theory is composed of a series of four universal stages that occur in a fixed order from birth through adolescence and are, in chronological order,

a. formal operational; concrete operational; preoperational; and sensorimotor. b. sensorimotor; preoperational; concrete operational; and formal operational. c. sensorimotor; formal operational; preoperational; and concrete operational. d. sensorimotor; formal operational; concrete operational; and preoperational.