Step 1: Understanding the Concept:
Robert Peck expanded on Erik Erikson's stage of Generativity versus Stagnation by proposing four developmental adjustments or tasks of middle adulthood.
Step 2: Detailed Explanation:
Peck's four stages of middle age adjustment are:
1. Valuing wisdom versus valuing physical powers: Shifting appreciation from youthful physical stamina and appearance toward analytical judgment and life experience.
2. Socializing versus sexualizing in human relations: Redefining interpersonal relationships so that partners, friends, and colleagues are valued as unique individuals and intellectual companions, rather than primarily as sexual partners. This is driven by physiological changes such as menopause and climacteric.
3. Emotional flexibility versus emotional impoverishment: Retaining the capacity to form new emotional attachments as older bonds are broken by death or separation.
4. Mental flexibility versus mental rigidity: Remaining open to new ideas, perspectives, and lifelong learning rather than becoming set in dogmatic ways.
Step 3: Final Answer
The adjustment emphasizing the redefinition of others as companions rather than sexual objects is Socializing versus sexualizing in human relations.