Final answer:
Jacque's theory emphasized the mid-life crisis during middle adulthood, reflecting a time of potential reassessment of life achievements and directions.
Step-by-step explanation:
Jacque's theory emphasized the mid-life crisis. This crisis occurs during middle adulthood, which ranges from the 40s to the mid-60s. During this stage, a person faces the psychosocial conflict of generativity versus stagnation, as defined by Erik Erikson's stages of psychosocial development. Generativity involves engaging in life's work and contributing to others, which can include activities like volunteering, mentoring, and child rearing. If an individual does not find a way to contribute, they may experience stagnation, which is characterized by a lack of productivity and self-improvement. A mid-life crisis can be seen as part of this struggle, where individuals reassess their achievements and life direction, leading to potential changes in career, relationships, or other personal areas.