According to McBurney and Collings, the average threshold for human vision is a candle flame seen from ________ mile(s) on a dark, clear night

Wife: "Would you like to stop for a drink?" Husband: "No, thanks." Tannen writes that in his answer, the husband was

a. being inconsiderate. b. expressing a preference. c. making a ruling. d. manifesting independence.

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.