The first Humean variable to be understood by children is ___, and the last to be understood is ___

When conducting a study using, researchers first ________ a sample from a specified population,

and then ________ participants in the sample to different groups. A) randomly assign; randomly select B) collect; add C) identify; designate D) randomly select; randomly assign

Which of the following is involved in executive functions?

a. Prefrontal cortex b. Brainstem c. Amygdala d. Spinal cord