LIFESCI 2D03 Lecture Notes - Lecture 4: Impact Factor, Random Assignment, Dependent And Independent Variables
24 Sep 2017
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Primary literature researcher themselves report on their experiments: dissertations, technical reports, conference proceedings. Secondary literature someone else summarizes the researchers work: magazine articles, literature reviews, textbooks. Impact factor # generated to illustrate how often people cite the experiment published. If confirmed, it is (cid:374)ot (cid:862)prove(cid:374)(cid:863) (cid:271)ut re(cid:373)ai(cid:374)s provisio(cid:374)al (cid:894)i. e. , for the ti(cid:373)e (cid:271)ei(cid:374)g(cid:895) How do we test hypotheses: descriptive: to develop description of the phenomenon, correlational: is there an association between two variables, experimental: independent variable: manipulate. Dependent variable: measure: ca(cid:374) have a des(cid:272)riptive h(cid:455)pothesis that"s also e(cid:454)peri(cid:373)e(cid:374)tal. Sampling from a population: define the population and the sample, this course population = all of that species of animal in the world. Hypothesis: male wolf spiders use the behaviour of nearby males to find receptive females: females are very cryptic hard to find in the natural environment. 1: males move in direction of other males doing courtship dances to find females.
