Theories
Psychological theories are systems of ideas that can explain certain aspects of human thoughts, behaviors and emotions. Psychology researchers create these theories to make predictions for future human behaviors or events that may take place if certain behaviors exist. In the workplace, these theories are useful while drafting plans to develop employee behaviors, increase motivation and promote productivity.
Key Terms
- Jean Piaget
- Behaviorism
- Freud
- Approaches
- Neuroscience
Jean Piaget
Jean Piaget's theory of cognitive development suggests that children move through four different stages of intellectual development which reflect the increasing sophistication of children's thoughts. Child development is determined by biological maturation and interaction with the environment.
Learn More: Piaget's Stages of Cognitive Development
Behaviorism
Behaviorism is a theory of learning that states all behaviors are learned through interaction with the environment through a process called conditioning. Thus, behavior is simply a response to environmental stimuli.
Learn More: Behaviorist Approach in Psychology
Freud
Sigmund Freud (1856 to 1939) was the founding father of psychoanalysis, a method for treating mental illness and a theory that explains human behavior. His theories are clinically derived, based on what his patients told him during therapy.
Learn More: Sigmund Freud's Influence on Psychology
Approaches
An approach is a perspective that involves certain assumptions about human behavior: the way people function, which aspects of them are worthy of study, and what research methods are appropriate for undertaking this study. The five major psychological perspectives are biological, psychodynamic, behaviorist, cognitive, and humanistic.
Learn More: Major Perspectives in Modern Psychology
Neuroscience
Neuroscience is the branch of science concerned with studying the nervous system. It is a multidisciplinary field integrating numerous perspectives from biology, psychology, and medicine. It consists of several sub-fields ranging from the study of neurochemicals to the study of behavior and thought.
Learn More: What is Neuroscience?
Frequent Asked Questions
No, health psychology and clinical psychology are not the same, although they share some similarities. While health psychology focuses on the relationship between psychological factors and physical health, clinical psychology focuses on diagnosing and treating mental health disorders. Clinical psychologists work with individuals experiencing mental health problems such as anxiety, depression, bipolar disorder, or schizophrenia. They use various therapeutic techniques to help clients manage their symptoms and improve their psychological well-being.
On the other hand, health psychologists work with individuals to help them adopt healthy behaviors and cope with chronic health conditions. They may provide interventions such as stress management training, pain management, or smoking cessation programs. Health psychologists may also work with healthcare providers to improve patient outcomes and help patients adhere to their medical treatment plans.
While there are some overlaps between the two fields, health psychology is primarily concerned with the relationship between psychological and physical health, while clinical psychology is primarily concerned with diagnosing and treating mental health disorders.
The words psychodynamic and psychoanalytic are often confused. Remember that Freud’s theories were psychoanalytic, whereas the term ‘psychodynamic’ refers to both his theories and those of his followers, such as Carl Jung, Anna Freud, and Erik Erikson.
Learn More: Psychodynamic Approach
An example of health psychology would be a study examining stress’s impact on physical health. This research might investigate how chronic stress affects the body, such as increasing the risk of cardiovascular disease or exacerbating existing health conditions. Health psychologists may also study how people cope with stress and develop interventions to help individuals manage stress more effectively.
For example, a health psychologist might design a stress management program that includes relaxation techniques, cognitive-behavioral therapy, and social support. Another example might be investigating the psychological factors that influence adherence to medical treatment, such as medication or physical therapy, and developing interventions to improve compliance and promote better health outcomes.
Developmental psychology is a scientific approach which aims to explain how thinking, feeling, and behavior change throughout a person’s life. A significant proportion of theories within this discipline focus upon development during childhood, as this is the period during an individual’s lifespan when the most change occurs.
Learn More: Developmental Psychology
Sigmund Freud proposed that personality development in childhood takes place during five psychosexual stages, which are the oral, anal, phallic, latency, and genital stages.
During each stage, sexual energy (libido) is expressed in different ways and through different body parts.
Learn More: Freud’s Psychosexual Stages of Development
Object permanence means knowing that an object still exists, even if it is hidden. It requires the ability to form a mental representation (i.e. a schema) of the object.
The attainment of object permanence generally signals the transition from the sensorimotor stage to the preoperational stage of development.
Learn More: What Is Object Permanence According To Piaget?
Psychology studies the mind of an individual to understand human behavior and social and emotional reactions, whereas sociology looks beyond individuals and examines societal institutions and groups of people.
Learn More: Similarities and Differences Between Sociology and Psychology
Uk
To become a health psychologist in the UK, you typically need to have the following qualifications:
- A British Psychological Society (BPS) accredited undergraduate degree in psychology or a related field.
- A BPS-accredited postgraduate degree in health psychology includes completing at least two years of supervised practice in health psychology.
- Registration with the Health and Care Professions Council (HCPC) as a Practitioner Psychologist in the field of Health Psychology.
- Relevant work experience in a health-related setting, such as a hospital, health clinic, or public health agency.
- Continuing professional development (CPD) to maintain registration with the HCPC and stay up-to-date with the latest research and practices in the field.
Note that the requirements for becoming a health psychologist may vary depending on the specific job or employer. It’s always a good idea to check with the BPS and HCPC for the most up-to-date information on qualifications and registration requirements.
USA
In the USA, the qualifications to become a health psychologist typically include:
- Completion of a doctoral degree (PhD or PsyD) in health psychology or a related field, such as clinical psychology, counseling psychology, or behavioral medicine.
- Completion of a supervised clinical internship or residency program in health psychology or a related field.
- Licensure as a psychologist in the state where you plan to practice. Requirements for licensure vary by state, but typically include completion of an accredited doctoral program, a certain number of supervised clinical hours, and passing a licensing exam.
- Additional training or certification in a specific area of health psychology, such as behavioral medicine, pediatric health psychology, or rehabilitation psychology.
- Continuing education and professional development to maintain licensure and stay up-to-date with advances in the field.
Note that the specific qualifications may vary depending on the employer and the specific job requirements. It’s always a good idea to check with the American Psychological Association (APA) or state licensing board for the most up-to-date information on qualifications and licensure requirements.




























