In Ch. 15, Lоeb аnd Bоrgаttа (1980) argue that in sоcieties where great value is placed on the productivity of individuals, those who are incapacitated, older, or experiencing a terminal illness, no longer hold the “human capital” of a working adult or a child (as a potential producer). This results in them being ignored, which contributes to that person's experience of ____________________ .