- Provide Examples of Experimental and Non-experimental Research Design. Contrast the Levels of Control Applied to Each
The primary objective of an experimental design is to influence an intervention primarily to determine the impact it has on a dependent variable. The technique compares the variations between the control groups to an experimental cluster that is receiving treatment. The non-experimental model involves observing the manner in which variables are associated with each other without manipulating the outcome (Leatherdale, 2019). Examples of non-experimental designs include descriptive and correlations since the systems do not provide emphasis on investigating the variables while experimental methods entail quasi and randomized research. In the quasi-trial, participants are randomly allocated to treatment settings (Cash, Stanković & Štorga, 2016). In the non-experimental methods there is minimal intervention of parameters, and mostly the result is of low quality while in experimental design the level of control is high to achieve accurate result.
- What is Sampling Theory? Describe it and Provide Examples to illustrate your Definition. Discuss Generalizability as it applies to Nursing Research.
Sampling theory is an investigation that determines the relationship that occurs between a population and samples obtained from that populace. The model is only applicable to non-random and random sampling in which the population represents members with similar specifications (Alvi, 2016). The sampling model is concerned with determining the characteristics’ of a population from of the trial. For instance, counting the number of students in a given institution to determine the percentage of male and females. Generalizability is the determination of how effective an investigation is for a broader group of individuals. In nursing, the concept is applied after researching on a sample populace obtained from a given population in which the result is applied to the whole community. The choice of the confinements of the study areas affects the internal and external accuracy (Kuku & Ganguli, 2012). Notably, the populace is built of members with infection cases and participants without inform of illness.
Alvi, M. (2016). A manual for selecting sampling techniques in research. https://mpra.ub.uni-muenchen.de/70218/
Cash, P., Stanković, T., & Štorga, M. (2016). An introduction to experimental design research. In Experimental Design Research (pp. 3-12). Springer, Cham.
Kukull, W. A., & Ganguli, M. (2012). Generalizability: The trees, the forest, and the low-hanging fruit. Neurology, 78(23), 1886-1891.
Leatherdale, S. T. (2019). Natural experiment methodology for research: A review of how different methods can support real-world research. International Journal of Social Research Methodology, 22(1), 19-35.