One concern for a repeated-measures study is that the participants in one treatment may have different characteristics than the participants in the other treatment

Motion parallax can cause you to perceive motion even when there is none

Indicate whether the statement is true or false.

Which of these is an example of one of the opportunistic infections that tend to occur in people infected with HIV?

a) shingles b) pneumonia c) multiple sclerosis d) Huntington's disease