We define successful aging as including three main components: low probability of disease and disease-related disability, high cognitive and physical… - Robert Louis Kahn

Innovative roles represent ... The intra-role conflicts of the innovator stem from his engagement and commitment to the creative, non-routine aspects of his job and his corresponding disinterest and disdain for the routine or uncreative demands placed upon him.

[A is] ... the simultaneous occurrence of two (or more) sets of pressures such that compliance with one would make more difficult compliance with the other.

Overload could be regarded as a kind of inter-sender conflict in which various role senders may hold quite legitimate expectations that a person perform a wide variety of tasks, all of which are mutually compatible in the abstract. But it may be virtually impossible for the focal person to complete all of them within given time limits. He [sic] is likely to experience overload as a conflict of priorities; he must decide which pressures to comply with and which to hold off. If it is impossible to deny any of the pressures, he may be taxed beyond the limits of his abilities. Thus overload involves a kind of person-role conflict and is perhaps best regarded as a complex, emergent type combining aspects of inter-sender and person-role conflicts.