Planning a Psychology Investigation

Edited by Jamie (ScienceAid Editor), SmartyPants

Planning a Psychology Investigation

In this page will we look at the things you need to consider in planning a Psychological study, these techniques can be applied to any social science.

Aims and Hypotheses

It is important to know these are different and what these differences are.

The aim of a study is what you want to find out. When writing a project it is important that this is very specific.

A hypothesis states what your prediction is. There are two types of hypotheses. A null hypothesis where you state there will be no change. It is what you assume to be true until you can prove otherwise. The alternative hypothesis is the prediction you (usually) are trying to prove.

Was this helpful? Yes | No | I need help

The below table shows an example of these to help you understand.

Aim To investigate how useful www.scienceaid.net is for science students.
Null Hypothesis Science Aid has no effect on students performance in tests.
Alternative Hypothesis Science Aid improves the performance of students in tests.

Sampling

Sampling refers to the way that you select people for your investigation. There are several different methods that can be used. The table below outlines some of the different types and discusses the pros and cons of them.

Was this helpful? Yes | No | I need help

Sampling Type Definition Advantages Disadvantages
Opportunity You use the first people who fit your criteria. Easiest sampling method, very inexpensive. Doesn't use a variety of people that represent the population. Can be biased because only people from your own social group are included.
Systematic Take every 2nd 10th etc. person Hopefully more representative, simple to do, has no bias. Because it is only based on chance, there is no way of ensuring it is representative.
Random Everyone in the target population has an equal chance of being selected. Hopefully more representative and has no bias. Can be difficult to implement and therefore expensive.
Stratified The proportions of people in the sample are equivalent to the population (eg. 50% female). Very representative and therefore the findings of an experiment using this method can be applied to everybody more easily. Complicated to make a sample that represents everybody so could take a long time and be expensive.
Ad

Referencing this Article

If you need to reference this article in your work, you can copy-paste the following depending on your required format:

APA (American Psychological Association)
Planning a Psychology Investigation. (2017). In ScienceAid. Retrieved Apr 29, 2017, from https://scienceaid.net/psychology/approaches/plan.html

MLA (Modern Language Association) "Planning a Psychology Investigation." ScienceAid, scienceaid.net/psychology/approaches/plan.html Accessed 29 Apr 2017.

Chicago / Turabian ScienceAid.net. "Planning a Psychology Investigation." Accessed Apr 29, 2017. https://scienceaid.net/psychology/approaches/plan.html.

If you have problems with any of the steps in this article, please ask a question for more help, or post in the comments section below.

Comments

ScienceAid welcomes all comments. If you do not want to be anonymous, register or log in. It is free.

Ask the author

Jamie
Featured Author
166 Articles Started
1,284 Article Edits
43,715 Points
Jamie is a featured author with ScienceAid. Jamie has achieved the level of "Captain" with 43,715 points. Jamie has started 166 articles (including this one) and has also made 1,284 article edits. 105,000 people have read Jamie's article contributions.
Jamie's Message Board
Jamie: Hi, my name is Jamie.
Jamie: Can I help you with your problem about "Planning a Psychology Investigation"?
 

Article Info

Categories : Approaches

Recent edits by: Jamie (ScienceAid Editor)

Share this Article:

Thanks to all authors for creating a page that has been read 21 times.

Do you have a question not answered in this article?
Click here to ask one of the writers of this article
x

Thank Our Volunteer Authors.

Would you like to give back to the community by fixing a spelling mistake? Yes | No