Glossary D

Dual-system hypothesis refers to a hypothesis that suggests that two (2) languages are represented somehow in separate systems of the mind.

Dual-task performance refers to an experimental paradigm involving presentation of two (2) tasks for a person to work on simultaneously.
Dualism is the belief that mind and body are different kinds of substance, existing independently. Moreover, Dualism is the view of behavior according to which actions can be separated into two (2) categories : voluntary behavior controlled by the mind, and involuntary behavior controlled by reflex mechanisms.

Dualist refers to anyone who believes that there are two (2) aspects to humans (1) the physical and (2) mental. Likewise, Dualist is described as one who believes that a person consists of two (2) separate entities: (1) a mind, which accounts for one's mental experiences and rationality, and (2) a body, which functions according to the same biological and mechanical principles as do the bodies of nonhuman animals.

Duality refers to the fact that language is represented at two (2) levels: phonology, the actual sound that a speaker produces, and the underlying abstract, meaning of language, reflected by the syntax (rules of putting words together) as well as semantics (meaning of those words and concepts).

Duality of patterning refers to a feature of a communication system in which a small number of meaningless units can be combined into a large number of meaningful units.

Duchenne Muscular Dystrophy or DMD refers to a relatively severe and common neuromuscular disorder that affects approximately 1 in every 3-4,000 male live births.

Deutsch: Drüsen ohne Ausführungsgänge / Español: Glándulas sin conductos / Português: Glândulas sem ductos / Français: Glandes sans conduit / Italian: Ghiandole senza dotti

Ductless glands in the psychology context refer to glands that release hormones directly into the bloodstream rather than through a duct. These glands, also known as endocrine glands, play a crucial role in regulating a wide range of physiological and psychological processes, including mood, stress responses, and behaviour. The hormones they secrete influence brain function and emotional states, making them highly relevant to the study of psychology, particularly in areas such as neuropsychology, behavioural psychology, and psychophysiology.