Glossary H

Hawthorne effect is defined as a change in behavior due simply to the experimenter's paying attention to the participants rather than to the effects of the independent variable. It is the the condition in which performance in an experiment is affected by the knowledge of participants that they are in an experiment. Hawthorne effect, moreover, is a a change in behavior that occurs when individuals know they are being studied by researchers. When employees change their behavior due solely to the fact that they are receiving attention or are being observed, it is called Hawthorne effect. Please see Demand characteristics

Hawthorne studies refer to a series of studies conducted at the Western Electric plant in Hawthorne, Illinois, that have come to represent any change in behavior when people react to a change in the environment.

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Hazing is defined as an initiation rite into a group that subjects the new member to mental or physical discomfort, harassment, embarrassment, ridicule, or humiliation.

HBM (Health Belief Model) which is the acronym of Health Belief Model which is a major theory of health behavior that suggests that our beliefs relating to the effectiveness, ease, and consequences of doing (or not doing) a certain behavior will determine whether we do or not do that behavior.

HCI is the abbreviations of Human-computer interaction which is the application of of human factors to the design of computers and computer soft ware.

- HD (Huntington's disease) : HD is the abbreviations of Huntington's disease, a genetic, autosomal dominant progressive sub-cortical Dementia that inflicts devastating motor impairment in the form of chorea, as well as cognitive decline on adults in the prime of their lives. HD is also called Huntington's Chorea. Please see Huntington's disease.

- HDL (High-density lipoprotein) : HDL (High-density lipoprotein ) is a form of lipoprotein that confers some protection against coronary artery disease; chemicals that help keep arteries clear and break down LDLs

HDL cholesterol is the acronym of High-Density Lipoprotein Cholesterol) , a cholesterol that is transported in the blood via high-density proteins; related to low risk of heart disease.