(redirected from Demand characteristics)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.


2. typical of an individual or other entity.
demand c's cues regarding the purpose of the study or the behavior expected that an experimental subject perceives and responds to.


1. Synonym(s): character
2. Typical or distinctive of a particular disorder.


/char·ac·ter·is·tic/ (kar″ak-ter-is´tik)
2. typical of an individual or other entity.

demand characteristics  behavior exhibited by the subject of an experiment in an attempt to accomplish certain goals as a result of cues communicated by the experimenter (expectations or hypothesis).


Etymology: Gk, charassein, to engrave
1 adj, typical of an individual or other entity.
2 n, a trait that distinguishes an individual or entity.


1. Synonym(s): character.
2. Typical or distinctive of a particular disorder.


adj 1. emblematic or representative.
n 2. trait characterizing a person or illness. The most characteristic symptoms are crucial for determining the most efficacious homeopathic remedy. See also pathognomonic.


1. character.
2. typical of an individual or other entity. See also character.

characteristic curve
the photographic characteristics of an emulsion on an x-ray film based on plotting the density of the image obtained against the logarithm of the exposure under specified conditions of development.
characteristic radiation
nearly homogeneous radiation produced in the target of the x-ray tube when orbital electrons are knocked out and replaced by electrons from outer shells.
characteristic x-rays
see characteristic radiation (above).

Patient discussion about characteristic

Q. Do ADHD patients tend to have similar characteristics? I've noticed lots of kids and teenagers with ADHD are kind, sensetive and have a great sense of humor. Have you heard of any researches in that issue?? Have you noticed that as well?

A. so what do you say guys? anybody else here is familiar with these characteristics in kids with ADHD?

Q. what defining characteristics can i point out to her to show her that she is bipolar and must see a doctor? I have a very close friend who is with me for the past 25 yrs. We share everything about us frankly whether it is good or bad. So far we didn’t hide each other about the happenings around us. But for the past one month I suspect my friend is bipolar but she refuses to visit a doctor. What defining characteristics can I point out to her to show her that she is bipolar and must see a doctor? I don’t want to hurt her at any cost. I never ever do it. So please help.

A. You have reminded me about my friend who was with me before but lost her somewhere now. I can really feel how much you find hard to reveal her about her illness. It's very hard to get someone who is Bipolar to actually admit it and then even harder still to get them to commit to treatment because they enjoy their highs so much. You have to get her when she is in a depressive state as that is when they are most willing and receptive to treatment.

More discussions about characteristic
References in periodicals archive ?
Correlation coefficients between supply variables and demand characteristics in 2010 in Estonian municipalities Supply variable Demand characteristics Correlation coefficient har tts 0.
Fundamental questions about the effects of demand characteristics have received little attention.
Demand characteristics could be conceptualized as consisting of two components: an experimenter's preference and a scientific benefit.
Orne (1962) distinguished between demand characteristics and procedural variables, explicit requirements that permitted no alternative behavior except withdrawal from the research.
Demand Characteristics Versus Experimental Variables
Twenty participants were randomly assigned to each of three demand characteristics (positive, neutral, or negative).
All subjects first completed a consent form, which contained the demand characteristics in the form of positive, neutral, or negative wording.
In contrast, demand characteristics, manipulated by means of the instructions to the subject concerning the alleged benefits/handicap of music or sound, significantly affected performance on both Spatial and Verbal subtests of the DAT, with the highest performance consistently being shown when the subject was given neutral expectations concerning the effect of music, silence, or white noise.
A second experiment was therefore conducted to examine further the effect of positive, neutral and negative demand characteristics upon performance, following the same conceptual approach as in Experiment 1 but employing a dependent variable that was chosen to be unrelated to the putative ME or intelligence.
Instead, the expectation was that they would respond to demand characteristics implied by the instructions (Category IV) and show a preference for a long period of illumination (40 s on, 10 s off) over a short period of illumination (10 s on, 40 s off).
Whether the preference is better interpreted in terms of demand characteristics or relative reinforcer value depends on the pattern of results.
In that case, the increase in self-controlled choices could have been partially or entirely due to compliance with an experimental demand characteristic (Orne, 1962).