How variables used for previous literature can be written in literature review
Variables used in previous literature can be written in the literature review by providing a clear and concise description of each variable. This can include the name or label of the variable, its definition, and any relevant information on how it was measured or operationalized in previous studies.
Here is an example of how variables used in previous literature can be written in a literature review:
"Several previous studies have examined the relationship between stress and job performance. In these studies, stress was consistently measured using self-report scales such as the Perceived Stress Scale (Cohen et al., 1983) or the Job Content Questionnaire (Karasek, 1979). Stress was typically defined as the psychological and physiological response to events or situations that are perceived as threatening or demanding (Lazarus & Folkman, 1984). Job performance, on the other hand, has been operationalized either as objective measures of productivity, such as sales figures or output quantities (Smith et al., 2005), or as subjective evaluations of work performance, obtained through supervisor ratings or self-assessment questionnaires (Rizzo et al., 1970)."
In this example, the name or label of the variables (stress and job performance) is highlighted, along with a brief description of how they were measured and operationalized in previous studies. Additionally, relevant citations are provided to support the information presented.