A marginal total is the sum of the level of one variable across all of the levels of the other variable

______ is the process of recording voice samples for later use in a speech-generating device.

Fill in the blank(s) with the appropriate word(s).

Which type of conditioning is based on the principle that behavior becomes more likely or less likely depending on its consequences?

a. Classical conditioning b. Operant conditioning c. Counterconditioning d. Higher-order conditioning