when even one External member became part of the team, the information-gathering proficiency and financial performance were reduced; likewise, when Internal members were added to External teams, those teams’ information-gathering efficiency and financial performance increased.

Locus of Control had forced its way into the narrative of what determines academic achievement, and it has remained solidly in place to the present day.

research shows if we have close friends, we live longer, recover more quickly from illness, and are happier and more satisfied with life.

Internality was found to be related to greater perceived family cohesiveness. It seems the overall feeling of belonging and sharing in a cohesive family setting contributes to a warm and supportive environment conducive to learning the connections between behavior and its consequences.

Women who were External before they were married became significantly more depressed six months after they were married. Not surprisingly, they also were less satisfied with their partners. There were not significant effects for men.

whether Internals and Externals support or resist change depends on how it is presented to them.

If a task becomes difficult or failure looms, Externals are more likely to give up because they think there is little they can do to change matters.

Internality was found to be associated with academic achievement in children.

we don't see the link between our actions and our fitness levels or the subsequent greater likelihood of negative physical consequences including obesity, high blood pressure, and illness. We are paying an enormous price for our higher Externality in the form of poorer health, lower quality of life, and the development of life-threatening diseases.