Principles of Research and Practice Assignment Example | Topics and Well Written Essays - 2000 words

Principles of Research and Practice - Assignment Example Many researchers categorize empirical research methods into three categories: experimental, correlational, and descriptive (Creswell: 1994). These all correspond to ways of taking guesses and theories about humanity into argument with knowledge. Researchers must conduct testing for a wider range of basis, testing starts from pre-testing a research design to challenging the process of a measuring instrument. There is a popular application of methods in examining the fundamentals of hypotheses and this is very appropriate in giving the most reliable evidence of causation (Deacon ET. Al.:1999). A researcher must work on two essential things; first, he must have a control to at least one independent variable. He must observe and measure an independent variable. Second, he must do a random assignment, the researcher must decide whether or to what extent an investigational contributor is depicted to the independent variable. The numerous independent variable in an investigational designs i s significantly helpful, the outcomes in the field of media may vary for different kinds of people, such as creating consent to the knowledgeable study of these differences (Jensen: 2002). For example, including both experiences to mediated opposition and gender in one design allows a researcher to observe the independent variable with hostility and their interaction. ... In order to use mass communication, social and cultural backgrounds of the viewers must be observed to give a full description of the "real" world. For an instance, connection to broadcasted violence usually happens at home (Malhorta and Birks: 2000). If a researcher be in control of it, he has no guarantee that the results studied will be relevant in more distinctive contexts. Thus, experimental research may specify what can happen, rather than what really happen in "realistic" situations. Experimental research also leans to be limited to the short-term effect of the mass media. One typically cannot influence and have power over media-related activities for months or years. The researcher has no influence in a study using a co-variation among variables, such as televised violence and assault in children (Jensen: 2002). As an alternative, a researcher generally determines the variables as they take place obviously. Such studies usually fall well short of gathering the standards for c ausal conclusion. A correlation study, regarding measures of discovery to televised violence and aggression; it was a synchronic or cross-sectional study. Each variable was assessed at only one time point. It is occasionally probable to control time order by using a diachronic study, concerning more than one time point. One could correlate a determined independent variable with later adjusts in a dependent variable. Regardless of this inadequacy, correlational studies usually reflect naturally in occurring processes. In this sense, they are high in external validity. In fact, many questions are examined using both experimental and correlational techniques (Malhorta and Birks: 2000). To the extent, each type gives similar evidence such as a person's exposure to mediated