Plants grow naturally towards the strongest source of light, this is called phototropism. They do this in order to maximise their exposure to the sun and increase the amount of photosysnthesis (and therefore growth). This is a survival mechansim.
researcher will either use random assignment or matching What do random assignment and matching have in common? They are both designed to create equivalent groups of participants. Random assignment is to random selection as _____ is to _____
As a technique for creating equivalent groups, when is matching preferred over random assignment? a. when a large number of subjects are available and can be used b. when some extraneous variable is known to correlate with the dependent variable c. whenever a within-subjects design is preferred over a between-subjects design d. whenever a potential confound exists, but you arenât aware of its presence 19.