A change in the axon membrane potential from -70 mV to -90 mV would be termed a(n)

In Bryan & Harter's very early research on Morse code, the best performance, after

extensive practice, was with (a) random letters (b) random words (c) nonsense syllables (d) sentences

An experimenter hypothesizes that if X is a cause, Y is an effect, and the relation is mediated by M. If this logic is correct, then one aspect of the analysis implies that __________ should predict Y, even after controlling for __________

(Give letters.) Fill in the blanks with correct word