Two stimuli must differ by a constant minimum percentage (rather than a constant amount), to be perceived as different. You will probably not notice an increase in weight if you add a 1/4 lb sandwich to a heavy, 20 lb backpack. On the other hand, if you add the sandwich to a pack that only weighs 2 lbs, you are sure to notice the increase in weight. this illustrates:.

If there were no system of checks and balance,the process of government would eventually fall apart. do you agree with this opinion? why or why not?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

What were the anti-federalists against? a. the views of patrick henry b. ratification of the constitution without a bill of rights c. the declaration of independence from great britain d. a weak central government