Medical dictionary. 2011.
Trait — In genetics, a trait refers to any genetically determined characteristic. In technical terms, a genetic trait is amenable to segregation analysis rather than quantitative analysis. A dominant lethal trait is a trait that is expressed if present… … Medical dictionary
threshold — 1. The point at which a stimulus first produces a sensation. 2. The lower limit of perception of a stimulus. 3. The minimal stimulus that produces excitation of any structure; e.g., the minimal stimulus eliciting a moto … Medical dictionary
Trait theory — In psychology, Trait theory is a major approach to the study of human personality. Trait theorists are primarily interested in the measurement of traits , which can be defined as habitual patterns of behavior, thought, and emotion. [Saul Kassin,… … Wikipedia
Threshold effect — In particle physics, the term threshold effect usually refers to small corrections to rough calculations based on the renormalization group that arise from the detailed behavior near the scale where new physics takes place. In the context of… … Wikipedia
Quantitative trait locus — See also: Epistasis Quantitative traits refer to phenotypes (characteristics) that vary in degree and can be attributed to polygenic effects, i.e., product of two or more genes, and their environment. Quantitative trait loci (QTLs) are stretches… … Wikipedia
Polytomous Rasch model — The polytomous Rasch model is generalization of the dichotomous Rasch model. It is a measurement model that has potential application in any context in which the objective is to measure a trait or ability through a process in which responses to… … Wikipedia
Biometrics — For the academic journal of statistics in biology, see Biometrics (journal). For the application of statistics to topics in biology, see Biostatistics. At Walt Disney World, biometric measurements are taken from the fingers of guests to ensure… … Wikipedia
Culling — Cull redirects here. For people with the surname Cull , see Cull (surname). Drafting out culled sheep. Culling is the process of removing animals from a group based on specific criteria. This is done either to reinforce certain desirable… … Wikipedia
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
List of psychology topics — This page aims to list all topics related to psychology. This is so that those interested in the subject can monitor changes to the pages by clicking on Related changes in the sidebar. It is also to see the gaps in Wikipedia s coverage of the… … Wikipedia
