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n. any of a class of steroid hormones that are produced mainly by the ovaries and act as the principal female sex hormones, inducing estrus in female mammals and secondary female sexual characteristics in humans. The estrogens occurring naturally in humans are estradiol, estrone, and estriol, secreted by the ovarian follicle, corpus luteum, placenta, testes, and adrenal cortex. Estrogens are also produced by certain plants; these phytoestrogens may be used in the manufacture of synthetic steroid hormones. Estrogens are used therapeutically in estrogen replacement therapy and oral contraceptives and to treat certain menstrual disorders and some types of breast and prostate cancers.

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Psychology term of the day

June 16th 2024

job analysis

job analysis

the collection and analysis of information about a specific job. Data are obtained through interviews with or written questionnaires from those doing or supervising the job, or through observation or audiovisual recordings of the job in action. Important classes of information include the behaviors, tools, working conditions, and skills involved in the job. Job analysis is the first step in developing effective personnel selection, employee evaluation, job evaluation, and personnel training programs. Once data have been collected, the role of the job analyst is to use statistical techniques and subjective judgment to determine the primary dimensions of a job and to identify those positions that are sufficiently similar to be classified as the same job.