Columbia subject headings:
Bereavement.
Conservatism.
Diffusion of innovations.
Social change.
Harvard subject headings:
Attachment behavior.
Bereavement--Psychological aspects
Conservatism--Psychological aspects.
Diffusion of innovations.
Social change--Psychological aspects.
Princeton subject headings:
Attachment behavior.
Bereavement--Psychological aspects.
Conservatism--Psychological aspects.
Diffusion of innovations.
Social change--Psychological aspects.