Dialectical behavior therapy (DBT) treatment is a cognitive-behavioral approach that emphasizes the psychosocial aspects of treatment.
Full-spectrum light is light that covers the electromagnetic spectrum from infrared to near-ultraviolet, or all wavelengths that are useful to plant or animal life; in particular, sunlight is considered full spectrum, even though the solar spectral distribution reaching Earth changes with time of day, latitude, and atmospheric conditions.
When illuminating an object or scene, a light source emits a spectrum of colored wavelengths. For example, sunlight emits a spectrum including infrared, ultraviolet and all visible wavelengths, whereas candlelight emits only red, orange, yellow and infrared wavelengths, giving everything it illuminates an orange cast.