Question

Assume you were asked to interview a researcher about the merits and weaknesses of quasi-experimental designs. Critically discuss the merits and weakness of a single group time series design

Also include in the answer the following questions with references:

1. What are the merits of each of the specific designs?
   
2. When should you use each of the specific designs?
   
3. What is the statistical analysis that is used for each of the specific designs?
   
4. What are the limitations of each of the specific designs?
   
5. What is one research question for each of the specific designs (using a topic area that you are interested in)?

Answer 1

solution :

Advantages :

Semi trial research might be increasingly attainable on the grounds that it regularly does not have sufficient energy and strategic limitations related with many genuine exploratory plans.

Responses of guineas pigs are bound to be authentic on the grounds that it not a fake research condition.

It lessens the trouble and moral worries that may encompass the pre-choice and arbitrary task of guineas pigs. For instance, if inspecting the impacts of cigarette smoking by pregnant ladies on the baby, it is exploitative to haphazardly appoint pregnant ladies to gatherings.

The outcomes created can regularly be utilized to fortify the discoveries of contextual analyses by leading examination that may fit factual investigation.

Dangers to legitimacy can be distinguished and tended to in the examination plan with an end goal to limit their effect.

Genuine exploratory structures are in some cases illogical or outlandish in light of the fact that the examination can just adequately be done in common settings. Exploratory research can make counterfeit circumstances that don't generally speak to genuine circumstances. This is to a great extent because of actuality that every other variable are firmly controlled which may not make a completely practical circumstance. Consequently, outside legitimacy is expanded semi trial inquire about.

It tends to be exceptionally helpful in recognizing general patterns from the outcomes, particularly in sociology disciplines.

Coordinating strategies might be utilized to help make a sensible control gathering, making speculation increasingly attainable. For instance, on the off chance that one gathering of headache endures got another treatment and a second gathering did not get the treatment, the distinction in the agony levels might be ascribed to the treatment if the control aggregate is a proper examination gathering.

Semi trial methodologies may diminish the time and assets required on the grounds that broad pre-screening and randomization isn't required or used.

There are numerous varieties of trial examine and the analyst can tailor the investigation while as yet keeping up the legitimacy of the structure.

Impediments :

The absence of arbitrary task into test bunches prompts non-proportionate test bunches which can confine the generalizability of the outcomes to a bigger populace. Next to of the absence of randomization and the diminished inside legitimacy, decisions about causality are less conclusive in semi test structures.

Previous elements and different impacts are not considered in light of the fact that factors are less controlled in semi exploratory research. For instance, while looking at the effect of smoking by pregnant moms, there might be different factors, for example, diet, instruction, by and large wellbeing, and access to social insurance all in all that might assume a job in the result. On the off chance that different factors are not controlled, the scientist can be guaranteed that the treatment was the sole factor causing the result.

The examination must hold fast to moral principles so as to be legitimate. These will be talked about in the following module of this arrangement.

Measurable investigations may not be important because of the absence of randomization and the dangers to inner legitimacy.

Human blunder likewise assumes a key job in the legitimacy of any venture as examined in past modules.