Quantitative Designs – Coursework Example
Quantitative designs Quantitative research is a formal, objective, precise, systematic process for producing information about the world in regards to dynamics of a population, characteristics, as well as a phenomenon. Two designs under this category are descriptive and experimental designs among others (Creswell, 2014).
Descriptive research design is the logical data gathering and presentation to give an apparent picture of a certain situation. It intends to discover as well as describe new facts about events, situation, activities, or people. Moreover, it seeks to describe the existing status of an identified variable (Creswell, 2014). Systematic data collection entails cautious selection of the studied units as well as vigilant measurement of each variable. One of the strengths of descriptive research design is its ability to produce results in a quite short period. However, it has limitations since the findings cannot be generalized to the entire population.
On the other hand, Experimental research design utilizes the scientific method to establish the cause-effect relationship among a group of variable in a study. In experimental design, the researcher makes an effort to identify as well as impose control over all variables except one. Independent variable is manipulated to find out the effects on the dependent variables. Participants are assigned randomly to experimental treatments instead of being identified in groups that occur naturally (Creswell, 2014).
This design Strength is that it is feasible, practical and can be generalized to some extent. It also introduces some control over particular extraneous variables. Conversely, this design is limited since it cannot be applied in most real situations because some variables cannot be controlled or manipulated.
Descriptive Research explores associations between variables whereas experimental research establishes causation (Creswell, 2014). In addition, descriptive designs use surveys, mails, personal interviews, telephones as well as secondary data in collecting information whereas experimental research collects data from field and laboratory experiments.
In both designs, ethical considerations must be adhered to. Participants have the right to self-determination, as well as right, should be respected. They have the right to decline or accept to participate in the research without prejudice or punishment, withdraw from the research at any stage, withhold information as well as ask for clarification concerning the aim of the study.
Creswell, J. W. (2014). Research design: Qualitative, quantitative, and mixed methods approaches. Thousand Oaks, California: SAGE Publications.