Knowledgeable and unbiased observers have generally noted, and studies have reliably shown, that psychotherapy is better than no treatment at all for a person who is seriously depressed. My study failed to find a difference. From this I can conclude that
a. psychotherapy really is not effective.
b. my study must have been poorly done.
c. my study may have lacked sufficient power to find a difference.
d. other psychologists don't know what they are talking about.
Question 2
The measure of the effect size for the difference between two groups is best seen as
a. the difference in their means.
b. .
c. the ratio of the means.
d. all of the above
Male giraffe mounting a female. Only dominant males are generally able to mate.
Three days after the Boston Marathon explosion, the FBI released this photograph that had been taken
Use of squid giant axons for studies of neural transmission
Cross-Sectional Studies
Single nucleotide polymorphisms (SNPs) are shown in red
Incomplete dominance shown in the flower color of snapdragons