A too high or too low result on an AFP test may indicate a baby that will be born with Down syndrome

_____ is the most objective method known for acquiring knowledge

a) Observational research b) The scientific method c) A pilot study d) A case study

Prepared learning is considered to be on a continuum. At one end, an instinctive

behavior pattern is compatible with the task to be learned. At the other is incompatibility. Key pecking by pigeons to obtain food is (a) at the compatible end (b) about the middle of the continuum (c) at the incompatible end (d) not on the continuum