If you take professional psychology as an example, the full spectrum — including clinical, counselling, health psychology, and neuropsychology — is applicable to the needs of seniors.
Prenons, par exemple, la psychologie professionnelle. Eh bien, le spectre complet, incluant les aspects cliniques, le counselling, la réhabilitation, la psychologie de la santé et la neuropsychologie, est applicable aux besoins des personnes âgées.