Which of the following appear to have no apparent purpose for the infant?
a. Dive and gag reflexes
b. Morrow and rooting reflexes
c. Deep tendon and suckling reflexes
d. Babkin and Babinski reflexes
D
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A test can fail in reliability while still being valid
Indicate whether this statement is true or false.
The age ranges within a developmental period-and even the periods themselves-are steadfast and unchanging.
Answer the following statement true (T) or false (F)
Which of the following characteristics of asynchronous growth violates the concept of cephalocaudal development?
a. Arms and legs mature before hands and feet. b. Hands and feet mature before arms and legs. c. Legs reach peak growth before shoulders and chest. d. Shoulders and chest reach peak growth before legs.
In the fixed-ratio schedule of reinforcement, the reinforcer is presented following the first response that gives the experimenter an average number of responses
Indicate whether the statement is true or false.