Stimulants used in treating attention-deficit hyperactivity disorder have been shown to do

Operant conditioning assumes that:

a. events that follow behavior affect whether the behavior is repeated in the future. b. one's mental processes (e.g., memory and perception) mediate what behaviors one does in a situation. c. voluntary behaviors are reflexive. d. one learns by watching others' behavior.

Speed-reading programs have been "all the rage," as they

have promised to increase your ability to read and comprehend at incredible levels. Some have even claimed to increase their reading speed to 30,000 words per minute. Research, however, has found that their actual reading speed is not nearly this high, and that their comprehension of what they read "tested miserably." Which principle of critical thinking is this problematic for? A) Replicability B) Extraordinary claims C) Occam's Razor D) Falsifiability