Psychological in the context of "Drug rehabilitation"

Public health is "the science and art of preventing disease, prolonging life and promoting health through the organized efforts and informed choices of society, organizations, public and private, communities and individuals". Analyzing the determinants of health of a population and the threats it faces is the basis for public health. The public can be as small as a handful of people or as large as a village or an entire city; in the case of a pandemic it may encompass several continents. The concept of health takes into account physical, psychological, and social well-being, among other factors.

Public health is an interdisciplinary field. For example, epidemiology, biostatistics, social sciences and management of health services are all relevant. Other important sub-fields include environmental health, community health, behavioral health, health economics, public policy, mental health, health education, health politics, occupational safety, disability, oral health, gender issues in health, and sexual and reproductive health. Public health, together with primary care, secondary care, and tertiary care, is part of a country's overall healthcare system. Public health is implemented through the surveillance of cases and health indicators, and through the promotion of healthy behaviors. Common public health initiatives include promotion of hand-washing and breastfeeding, delivery of vaccinations, promoting ventilation and improved air quality both indoors and outdoors, suicide prevention, smoking cessation, obesity education, increasing healthcare accessibility and distribution of condoms to control the spread of sexually transmitted diseases.

Perversion is a form of human behavior which is far from what is considered to be orthodox or normal. Although the term perversion can refer to a variety of forms of deviation, it is most often used to describe sexual behaviors that are considered particularly abnormal, repulsive or obsessive. Perversion usually differs from "deviant behavior", in that the latter covers areas of behavior (such as petty crime) for which perversion would be too strong a term. It is often considered derogatory, and, in psychological literature, the term paraphilia has been used as a replacement for most forms of sexual perversion, though this clinical term is controversial, and deviation is sometimes used in its place.

A choice is the range of different things from which a being can choose. The arrival at a choice may incorporate motivators and models.

Freedom of choice is generally cherished, whereas a severely limited or artificially restricted choice can lead to discomfort with choosing, and possibly an unsatisfactory outcome. In contrast, a choice with excessively numerous options may lead to confusion, reduced satisfaction, regret of the alternatives not taken, and indifference in an unstructured existence;and the illusion that choosing an object or a course, necessarily leads to the control of that object or course, can cause psychological problems.

Brainwashing is the systematic effort to get someone to adopt a particular deception, loyalty, instruction, or doctrine without their will or awareness. Brainwashing is also a colloquial term that refers in general to psychological techniques that manipulate action or thought against a person's will, desire, or knowledge. It attempts to damage individual or group attitudes, frames of reference, beliefs, values or loyalties by demonstrating that current thinking patterns and attitudes are wrong and need change. Brainwashing is said to reduce its subject's ability to think critically or independently, to allow the introduction of new, unwanted thoughts and ideas into their minds.

The term "brainwashing" was first used in English by Edward Hunter in 1950 to describe how the Chinese government appeared to make people cooperate with them during the Korean War. Research into the concept also looked at Nazi Germany and present-day North Korea, at some criminal cases in the United States, and at the actions of human traffickers. Scientific and legal debate followed, as well as media attention, about the possibility of brainwashing being a factor when lysergic acid diethylamide (LSD) was used, or in the induction of people into groups which are considered to be cults.

Sexual arousal (also known as sexual excitement) describes the physiological and psychological responses in preparation for sexual intercourse or when exposed to sexual stimuli. A number of physiological responses occur in the body and mind as preparation for sexual intercourse, and continue during intercourse. Male arousal will lead to an erection, and in female arousal, the body's response is engorged sexual tissues such as nipples, clitoris, vaginal walls, and vaginal lubrication.

Mental stimuli and physical stimuli such as touch, and the internal fluctuation of hormones, can influence sexual arousal. Sexual arousal has several stages and may not lead to any actual sexual activity beyond a mental arousal and the physiological changes that accompany it. Given sufficient sexual stimulation, sexual arousal reaches its climax during an orgasm. It may also be pursued for its own sake, even in the absence of an orgasm.

Social exchange theory is a sociological and psychological theory which studies how people interact by weighing the potential costs and benefits of their relationships. This occurs when each party has goods that the other parties value. Social exchange theory can be applied to a wide range of relationships, including romantic partnerships, friendships, family dynamics, professional relationships and other social exchanges. An example can be as simple as exchanging words with a customer at the cash register. In each context individuals are thought to evaluate the rewards and costs that are associated with that particular relationship. This can influence decisions regarding maintaining, deepening or ending the interaction or relationship. The Social exchange theory suggests that people will typically end something if the costs outweigh the rewards, especially if their efforts are not returned.

The most comprehensive social exchange theories are those of the American social psychologists John W. Thibaut (1917–1986) and Harold H. Kelley (1921–2003), the American sociologists George C. Homans (1910–1989), Peter M. Blau (1918–2002), Richard Marc Emerson (1925 –1982), and Claude Lévi-Strauss (1908–2009). Homans defined social exchange as the exchange of activity, tangible or intangible, and more or less rewarding or costing between at least two persons. After Homans founded the theory, other theorists continued to write about it, particularly Peter M. Blau and Richard M. Emerson, who in addition to Homans are generally thought of as the major developers of the exchange perspective within sociology. Homans' work emphasized the individual behavior of actors in interaction with one another. Although there are various modes of exchange, Homans centered his studies on dyadic exchange. John Thibaut and Harold Kelley are recognized for focusing their studies within the theory on the psychological concepts, the dyad and small group. Lévi-Strauss is recognized for contributing to the emergence of this theoretical perspective from his work on anthropology focused on systems of generalized exchange, such as kinship systems and gift exchange.

Psychological research refers to research that psychologists conduct for systematic study and for analysis of the experiences and behaviors of individuals or groups. Their research can have educational, occupational and clinical applications.

Child development involves the biological, psychological and emotional changes that occur in human beings between birth and the conclusion of adolescence. It is—particularly from birth to five years— a foundation for a prosperous and sustainable society.

Childhood is divided into three stages of life which include early childhood, middle childhood, and late childhood (preadolescence). Early childhood typically ranges from infancy to the age of 5 years old. During this period, development is significant, as many of life's milestones happen during this time period such as first words, learning to crawl, and learning to walk. Middle childhood/preadolescence or ages 5–10 universally mark a distinctive period between major developmental transition points. Adolescence often begins around the onset of puberty, marked as menarche or spermarche, occurring between 10 and 12 years of age, and ends upon acquiring the age of maturity.. Adolescence is characterized by maturation of the body, increase in capacity for learning, and emergence of personal identity. Developmental change may occur as a result of genetically controlled processes, known as maturation, or environmental factors and learning, but most commonly involves an interaction between the two. Development may also occur as a result of human nature and of human ability to learn from the environment.

Stress, whether physiological, biological or psychological, is an organism's response to a stressor, such as an environmental condition or change in life circumstances. When stressed by stimuli that alter an organism's environment, multiple systems respond across the body. In humans and most mammals, the autonomic nervous system and hypothalamic-pituitary-adrenal (HPA) axis are the two major systems that respond to stress. Two well-known hormones that humans produce during stressful situations are adrenaline and cortisol.

The sympathoadrenal medullary axis (SAM) may activate the fight-or-flight response through the sympathetic nervous system, which dedicates energy to more relevant bodily systems to acute adaptation to stress, while the parasympathetic nervous system returns the body to homeostasis.