are emotion-oriented, finding ways to keep the group together and maintain morale. is the web of relationships that is formed by the sum total of an individual’s interactions with other people.
is a group that an individual belong to and identifies with.
A is any group with whom individuals identify and whose attitude and values they adopt.
A is a small group of people who interact over a relatively long period of time on a direct and personal basis.
In an there is no official structure or established rules of conduct.
The develops when one more member is added.
In a the structure, goals, and activities of the group are clearly defined.
A is a group in which interaction is impersonal and temporary in nature.
An is a group made up of people who interact with one regularly through the Internet or other forms of electronic communication.

Dr. laguardia is a cognitive neuroscientist who is interested in the effect of brain concussions on the ability to recognize faces. he conducts a quasi-experimental study in which he examines football players before and after the regular season using the benton facial recognition test (a published, widely used measure of one's ability to recognize faces) to compare those who received concussions to those who did not. he finds that players who had concussions during the regular season performed worse on the benton facial recognition test than did players who did not experience which of the following is true regarding external validity in dr.laguardia's study? a. because dr. laguardia selected participants who actually experienced concussions, the study b. because dr. laguardia's study is a quasi-experiment, it is impossible to obtain c. because dr. laguardia's dependent variable was assessed in the laboratory, the study d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.