Scores of studies have demonstrated that subliminal self-help tapes are _____

When conducting research in a natural setting, the researcher commits to spending a significant amount of time in the

a) field doing observation b) laboratory doing research. c) library reading textbooks. d) classroom teaching.

In the study of finches' beaks, the biologists Peter and Rosemary Grant found that ____

a. Darwin had underestimated the power of natural selection b. under drought conditions, more thick-than thin-beaked birds survived and reproduced c. in only one generation, natural selection produced a better-adapted species d. ?when heavy rains became common, birds with slender beaks flourished e. All of the choices are correct.