The specific but limited time, usually early in an organism's life, during which the organism is particularly susceptible to environmental influences relating to some particular facet of development, is known as the

Jakob goes out a lot. He hangs around with a lot of guys from his neighborhood and his school. They are always skateboarding together downtown and playing video games

However, Jakob feels like he has no one to talk to about his problems and the things that are important to him. Jakob is experiencinga. social loneliness. b. emotional loneliness. c. separation. d. marginality.

In psychological assessment, the consistency of a measure or diagnostic instrument or system

is its ______. a. validity c. reliability b. variance d. coherence