Which of the following represents the secular trend?
a. the onset of puberty occurring earlier than in past generations
b. a historical trend towards increasing adult height
c. individuals having a longer life span than those in previous generations
d. all of these
B
You might also like to view...
A __________ stimulus is a cue signaling that a particular response will be positively reinforced
a. differential b. discriminative c. generalized d. latent
According to Erikson, which 17-year-old is most likely to figure out successfully who he or she is?
A) Rudy, who is very self-restrained. B) Arlo, whose parents have trained him from age five to be a professional baseball player. C) Deborah, who constantly tries new activities and roles, yet hasn't decided on any of them. D) Rashmi, who chooses not to initiate new activities.