Author Question: Once the youngest sibling gets to be about ____, he or she will start talking more to older siblings ... (Read 41 times)

hubes95 · **on:** Jun 22, 2018

Once the youngest sibling gets to be about ____, he or she will start talking more to older siblings than to mom.

a. 6 months old
b. 1 year old
c. 2 years old
d. 4 years old

Question 2

Dr. Simpson's students were rightfully upset when he used very accurate weight scales (assessing the poundage of each pupil) to determine their grades in a developmental psychology class. This is partially because his method of assessment lacked

a. a sufficient sample size.
b. reliability.
c. validity.
d. the ability to identify practice effects.