From psychological +‎ -ly.

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psychologically (not comparable)

1. In a psychological sense.

   The new novel is a psychologically complex thriller.

   • 2024 August 4, Terry Ward, “Fragile and complex, female friendships hinge on the three S’s, a new book says”, in CNN‎^[1]:

     In good times and bad, in sickness and health, the benefits of friendships between women are physically and psychologically undeniable.

2. Employing psychology.

   The patient's behaviour was interpreted psychologically.

   • 1960 December, “The Glasgow Suburban Electrification is opened”, in Trains Illustrated, page 714:

     The economics of rebuilding all the stations covered by the electrification would be prohibitive, but to help bring home to the Glasgow public that their North Clyde suburban service has been transformed, not merely re-equipped with new trains, stations have at least been associated psychologically with the rolling stock by a common colour scheme.