Historically, psychotherapy has sometimes meant "interpretative" (i.e. Freudian) methods, namely psychoanalysis, in contrast with other methods to treat psychiatric disorders such as behavior modification. Some definitions of counseling overlap with psychotherapy (particularly in non-directive client-centered approaches), or counseling may refer to guidance for everyday problems in specific areas, typically for shorter durations with a less medical or "professional" focus. Somatotherapy refers to the use of physical changes as injuries and illnesses, and sociotherapy to the use of a person's social environment to effect therapeutic change. Psychotherapy may address spirituality as a significant part of someone's mental / psychological life, and some forms are derived from spiritual philosophies, but practices based on treating the spiritual as a separate dimension are not necessarily considered as traditional or 'legitimate' forms of psychotherapy. Delivery Psychotherapy may be delivered in person (one on one, or with couples, or in groups) or via telephone counseling or online counseling (see also ). There have also been developments in computer-assisted therapy, such as virtual reality therapy for behavioral exposure, multimedia programs to teach cognitive techniques, and handheld devices for improved monitoring or putting ideas into practice (see also ). Most forms of psychotherapy use spoken conversation. Some also use various other forms of communication such as the written word, artwork, drama, narrative story or music. Psychotherapy with children and their parents often involves play, dramatization (i.e. role-play), and drawing, with a co-constructed narrative from these non-verbal and displaced modes of interacting. Regulation Psychotherapists traditionally may be mental health professionals like psychologists and psychiatrists; professionals from other backgrounds (family therapists, social workers, nurses, etc.) who have trained in a specific psychotherapy; or (in some cases) academic or scientifically trained professionals. Psychiatrists are trained first as physicians, and as such they may prescribe prescription medication; and specialist psychiatric training begins after medical school in psychiatric residencies: however, their specialty is in mental disorders or forms of mental illness. Clinical psychologists have specialist doctoral degrees in psychology with some clinical and research components. Other clinical practitioners, social workers, mental health counselors, pastoral counselors, and nurses with a specialization in mental health, also often conduct psychotherapy. Many of the wide variety of psychotherapy training programs and institutional settings are multi-professional. In most countries, psychotherapy training is completed at a postgraduate level, often at a master's degree (or doctoral) level, over four years, with significant supervised practice and clinical placements. Mental health professionals