Subjective associations of poor sleep are known to be linked with worse health-related quality of life in Parkinson disease, but correlating objective measures are harder to find. Researchers sought ...

The field of psychology is vast, and there are many ways to carve it up. For example, one possible difference is between animal and human psychology. Another division is between science and practice.

A criticism of happiness research is that it often relies on what a person says about his or her own happiness. Calling a self-report measure of happiness "subjective well-being" seems not to help ...