Once the youngest sibling gets to be about ____, he or she will ...

[hubes95]

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.

[harveenkau8139]

Answer to Question 1

d

Answer to Question 2

c

[hubes95]

Thanks for the timely response, appreciate it

[hramirez205]

Excellent