During World War II, promotion rates in the U. S. Air Corps were so rapid for the group as a whole that many individual soldiers in this military branch were unhappy about the speed at which they were promoted. Their unhappiness is best explained in terms of the: A) James-Lange theory. B) adaptation-level phenomenon. C) relative deprivation principle. D) two-factor theory. E) catharsis hypothesis.

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

Central american countries are important agricultural producers. each year, the united states imports about five billion dollars’ worth of a. bananas b. cacao c. mangoes d. coffee

Me 10 ! who would most approve of the us economic system and why? adam smith john maynard keynes karl marx