To say that attachment is synchronous means that it develops at the proper time in the developmental sequence of events

Which of these individuals is experiencing visual agnosia?

a. Tim, who cannot see as a result of a sensory deficit b. Ted, who knows what an object is for, but who does not know its name c. Teresa, who cannot move her mouth muscles to name an object d. Tess, who does not recognize a pencil as something meaningful

The most important limitation of the experimental method is that, no matter how careful an experimenter is, factors other than the independent variable can affect different subject groups in the study unequally. These factors are called _____

a) dependent variables. b) confounding variables. c) selection variables. d) error variables.