Raul has designed a research study in which subjects come to his lab and practice extension of the knee to a target angle with and without vibration. He is interested in determining whether vibration increases or decreases learning effects. What type of research is Raul doing

abolish

do away with

unanimous

in complete agreement

secede

separate; break free

inauguration

starting a new position with a formal ceremony.

cooperationist

people who wanted the north to cooperate with the south

surrender

to give up

volunteer

perform a service for free

draft

involuntary service in military

retreat

withdraw; move away from enemy

advisor

expert who gives advice

explanation:

answer; many cognitive abilities emerge earlier in children than piaget though;

its b. they were outraged that former confederates were able to join congress.