As salvatore grows older, he feels closer to his siblings and more connected with his spouse. at 85, his contact with acquaintances has diminished and he is left with a few very close relationships. he is not terribly interested in forming any new social ties. salvatore s behavior is consistent with theory." continuity activity disengagement socioemotional selectivity

Salvatore's behavior is consistent with socio-emotional selectivity theory .

The theory that recognizes the change in terms of cognitive influence especially as one age. It maintains that with age people become selective and they tend to invest in goals and activities that nurture their emotional well-being. As people age, they prefer positivity instead of negative information.

Being selective and narrowing social interactions improves "positive emotional experiences" and decreases negative experiences. Furthermore, the theory also recognizes that goals as one age tend to lean towards gaining more knowledge, career planning and others that will have a positive impact in the future.

answer:

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.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.