Glossary / Lexicon

Mechanism is an assumption that thoughts play no role in guiding behavior ; the belief that the behavior of organisms, including humans, can be explained entirely in terms of mechanical laws.

In psychology, the term "mechanism" refers to an explanation of behavior in terms of underlying physical or biological processes. This approach assumes that behavior can be explained by identifying the physical and biological mechanisms that give rise to it. The mechanism approach is often contrasted with more cognitive and social approaches that emphasize mental processes and social factors.

There are many examples of how the mechanism approach has been used to explain behavior in psychology. For instance, researchers have used the mechanism approach to study the neurological and physiological processes that underlie emotions such as fear, anger, and happiness. By identifying the specific brain regions and neural pathways that are involved in these emotions, researchers have been able to develop a more detailed understanding of how emotions work and how they can be altered.

Another example of the mechanism approach is the study of learning and memory. Researchers have used animal models to study the neural mechanisms of learning and memory, identifying specific brain regions and neural circuits that are involved in these processes. By manipulating these circuits using techniques such as optogenetics, researchers have been able to alter learning and memory in animals, providing new insights into how these processes work.

Other examples of the mechanism approach in psychology include the study of sensory perception, motor control, and the neural basis of decision making. In each of these areas, researchers have used a combination of behavioral experiments and neuroimaging techniques to identify the underlying physical and biological mechanisms that give rise to behavior.

Similar to the mechanism approach, there are several other approaches in psychology that focus on the physical and biological processes that give rise to behavior. These include:

1. Evolutionary psychology: This approach emphasizes the role of evolutionary processes in shaping behavior. Evolutionary psychologists study how adaptations to the environment have shaped the human mind and behavior.

2. Behavioral genetics: This approach focuses on the role of genetics in shaping behavior. Behavioral geneticists study the heritability of specific traits and behaviors and seek to identify specific genes that are associated with these traits.

3. Neuropsychology: This approach focuses on the relationship between brain function and behavior. Neuropsychologists use neuroimaging techniques to study brain function in patients with neurological disorders, such as stroke or traumatic brain injury.

4. Psychopharmacology: This approach focuses on the effects of drugs on behavior. Psychopharmacologists study the mechanisms by which drugs affect the brain and behavior and use this knowledge to develop new treatments for mental disorders.

Overall, the mechanism approach is an important tool for understanding behavior in psychology. By identifying the physical and biological processes that underlie behavior, researchers can develop a more detailed understanding of how behavior works and how it can be altered.