The development of the drug ________, whose generic name is disulfiram, employs the concepts of classical conditioning to help those suffering from alcoholism

Social smiles first appear ________________________

a. within the first two weeks after birth b. in the second or third month c. later in the first year d. after 18 months

The homogeneity of variance assumption assumes the population scores from which each of the samples are drawn are normally distributed

Indicate whether the statement is true or false