q Q Q data Q factor analysis Q methodology Q sort Q test Q-technique factor analysis Q–Q plot QALYs qat qEEG qi qigong QoL-AD QT QTL Quaalude quack quadrant quadrant sampling quadrantanopia quadrature quadriparesis quadriplegia qualia qualitative qualitative analysis qualitative data qualitative evaluation qualitative observation qualitative research qualitative variable quality quality adjusted life years (QALYs) quality adjusted survival analysis quality assurance quality circle quality control quality of care quality of life Quality of Life in Alzheimer’s Disease Scale (QoL-AD) quality of worklife (QWL) quality weighting quantal hypothesis (quantal theory) quantification quantifier quantile quantile–quantile plot (Q–Q plot) quantitative quantitative analysis quantitative data quantitative electroencephalograph (qEEG) quantitative evaluation quantitative psychology quantitative research quantitative score quantitative semantics quantitative trait loci (QTL) quantitative variable quantum quantum mind quantum theory quartile quartile deviation quartimax rotation quasi-experimental control group quasi-experimental design quasi-experimental research quasi-independence quasi-independent variable quasi-interval scale quasi-likelihood function quasi-observation quasi-vegetative state quasi– F ratio quasigroup quasineed quasirandom quasirandom sampling quaternity quazepam queer queer rights movement querulent questionnaire quetiapine queue Quick Test (QT) quick trajectory quick-and-dirty quid pro quo Quincke’s disease (Quincke’s edema) Quinian bootstrapping (Quinean bootstrapping) quintile quota control quota sampling quotient hypothesis QWL