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A wide range of research methods are used in psychology. These methods vary by the sources from which information is obtained, how that information is sampled, and the types of instruments that are used in data collection. Methods also vary by whether they collect qualitative data, quantitative data or both.
Information processing theory combines elements of both quantitative and qualitative development. Qualitative development occurs through the emergence of new strategies for information storage and retrieval, developing representational abilities (such as the utilization of language to represent concepts), or obtaining problem-solving rules ...
Psychologists use many research methods, and categorical distinctions of these methods have emerged.Methods can be categorized by the kind of data they produce: qualitative or quantitative—and both these are used for pure or applied research.
17) identify some commonly occurring features of qualitative research in Psychology: [3] A tendency to use relatively unstructured data (…); An approach to theory that involves generating theories that are localised and context specific, rather than testing large-scale theories that seek to explain psychological process in all people (…);
Quantitative psychological research is psychological research that employs quantitative research methods. [ 1 ] Quantitative research falls under the category of empirical research .
A criticism of quantitative coding approaches is that such coding sorts qualitative data into predefined categories that are reflective of the categories found in objective science. The variety, richness, and individual characteristics of the qualitative data are reduced or, even, lost. [citation needed]
Level of measurement or scale of measure is a classification that describes the nature of information within the values assigned to variables. [1] Psychologist Stanley Smith Stevens developed the best-known classification with four levels, or scales, of measurement: nominal, ordinal, interval, and ratio.
Human factors, human work capital is important issue that deals with qualitative properties. Some common aspects are work, motivation, general participation, etc. Although all of these aspects are not measurable in terms of quantitative criteria, the general overview of them could be summarized as a quantitative property.