It is estimated that genetic factors account for about ___% of individual differences for most personality traits, including the Big Five

According to research about the importance of context in infant memory,

a. context does not seem to have an important influence on infants' memory. b. when infants are younger than 6 months, context has no influence on infants' memory; however, context is important for infants who are older than 6 months. c. infants actually show enhanced memory if the researchers test memory in a different context. d. context effects are even stronger for infants than for adults.

Rob has recently experienced the most common male sexual dysfunction. This is:

a. male erectile disorder b. retarded ejaculation c. male orgasmic disorder d. premature ejaculation