![]() Correlation coefficients are useful in indicating the strength of a relation between factors while the associated sign helps to understand the direction of the correlation. These relationships help psychologists to make predictions, but not to highlight causative factors. These methods help to obtain a relationship between variables. The case study is a detailed account of an individual that helps understand a case, but one case cannot be generalized to other people.Ĭorrelational research methods are the other types of scientific approaches used in psychology. The interviews are very common in instances of qualitative surveys (Culver, Gilbert & Trudel, 2003). The tests are important when a research process requires the measurement of particular elements of a person’s psychology, for example, personality trait. This is very important in the case of self-reports or instances where questionnaires are mailed to targeted respondents. The questionnaires should be structured in a manner that makes them clear and easy to understand. ![]() Surveys entail administration of questionnaires that can be in the form of standardized test, as well as conducting interviews. This results in the achievement of ecological validity while employing the naturalistic observation methods as opposed to the laboratory observation (Jackson, 2009). Often, observations occur within the laboratories and this may lead to manifestation of unnatural behaviors by subjects due to the awareness that they are being studied. The difference between the two modes of observations is manipulation. Observations are conducted in the natural environment or in laboratories.
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