When children begin to form sentences, which of the following do they tend to form first?

For operant conditioning to work, reinforcers must be given each and every time the individual performs the behavior

: Indicate whether this statement is true or false.

While it is well-understood in neuroscience research that a

deficit of dopamine activity contributes to the symptoms of Parkinson's disease, other research has found that damage to the basal ganglia is also a contributor to this very serious illness. The fact that there is more than one explanation for the condition demonstrates the critical thinking concept of A) correlation versus causation. B) Occam's Razor. C) falsifiability. D) ruling out rival hypotheses.