Using a version of barr et al.'s (2003) spc procedure. townsend, 2007, preexposed infants to a new pair (instead of to the same pair) of puppets for 1 hr per day on successive days. one member of each new pair had been preexposed the day before, whereas the other member was novel. in phase 1. townsend, 2007, preexposed 6-month-olds to a different pair of puppets on each of 2 days (atb, b+c) o a. leave as is b. using a version of barr et al: 's (2003) spc procedure, townsend (2007) preexposed infants to a new pair (instead of to the same pair) of puppets for 1 hr per day on successive days. one member of each new pair had been preexposed the day before. whereas the other member was novel. in phase 1, townsend preexposed 6-month- olds to a different pair of puppets on each of 2 days (a+b. b+q) c. using a version of barr et al.'s (2003) spc procedure. townsend (2007) preexposed infants to a new pair (instead of to the same pair) of puppets for 1 hr per day on successive days. one member of each new pair had been preexposed the day before, whereas the other member was novel. in phase 1. townsend (ibid.) preexposed 6-month-olds to a different pair of puppets on each of 2 days (a+b, b+c) d. using a version of barr et al: 's (2003) spc procedure. townsend (2007) preexposed infants to a new pair (instead of to the same pair) of puppets for 1 hr per day on successive days. one member of each new pair had been preexposed the day before. whereas the other member was novel. in phase 1, townsend (see townsend. 2007) preexposed 6-month-olds to a different pair of puppets on each of 2 days (a+b, b+c).