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Digital subtraction angiography (DSA) is a fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. Images are produced using contrast medium by subtracting a "pre-contrast image" or mask from subsequent images, once the contrast medium has been introduced into a ...
Explanatory case studies explore causation to identify underlying principles. [23] [24] However, there is a debate to whether case studies count as a scientific research method. Clinical psychologists use case studies most often, especially to describe abnormal events and conditions, which are particularly important in clinical research. [25]
In design of experiments, single-subject curriculum or single-case research design is a research design most often used in applied fields of psychology, education, and human behaviour in which the subject serves as his/her own control, rather than using another individual/group. Researchers use single-subject design because these designs are ...
An academic discipline or field of study is known as a branch of knowledge. It is taught as an accredited part of higher education . A scholar's discipline is commonly defined and recognized by a university faculty.
Clinical psychology is at present the largest specialization within psychology. [198] It includes the study and application of psychology for the purpose of understanding, preventing, and relieving psychological distress, dysfunction, and/or mental illness. Clinical psychologists also try to promote subjective well-being and personal growth.
Choice architecture is the design of different ways in which choices can be presented to decision makers, and the impact of that presentation on decision-making. For example, each of the following: the number of choices presented [1] the manner in which attributes are described [2] the presence of a "default" [3] [4] can influence consumer choice.
Studies have shown that abnormal neurotransmitters, such as dopamine and serotonin, which are active in chemical messages in the brain, can serve as a cause of tic disorders. Researchers have also found abnormal changes in certain parts of the brain that cause strain on the blood flow within the brain, which is likely a contributor of tic ...
Positive psychotherapy (PPT) is a therapeutic approach developed by Nossrat Peseschkian during the 1970s and 1980s. [2] [3] [4] Initially known as "differentiational analysis", it was later renamed as positive psychotherapy when Peseschkian published his work in 1977, which was subsequently translated into English in 1987.