Whose writings strove to strip away unnecessary layers and retain only the kernel of truths?

Phoebe's teacher thinks she has a behavior problem. As a result, Phoebe starts to believe that she is a troublemaker and begins to act out in the classroom. This is an example of

A) an educational self-fulfilling prophecy. B) cultural bias. C) a stereotype threat. D) behavior conduct disorder.

Which of the following statements is most true regarding speech perception research?

A) We seem to be pre-programmed to primarily learn the language of our parents or culture. B) It is difficult to study how individuals perceive language and human speech sounds in infants under one-year-old. C) Infants that have parents that cannot hear or speak generally show major delays in human speech perception. D) Infants under 6 months of age can detect subtle changes in human speech sounds in languages they are unfamiliar with; this ability gradually declines with age.