Three types of experiments:

Question 1

Think about hypothesis

What is an experminet?

Answer 1

An experiment is an investigation where the hypthothesis is sientfically tested. In an expeirment the IV is manipulated and the DV is measured; any extranous variables are controlled.

Question 2

L…., F….. and N….

What are the three types of experiments?

Answer 2

• Labtory experiment
• Field experiment
• Natural experiment

Question 3

What is a labtory experiment?

Answer 3

Where the experminter directly manipulates the in one or more IV and meausres effects on DV, within a controlled enviorment

Does nto need to be in a lab could eb in a school

.Conditions are highly controlled
.Uses a standardised procudre teh expermienter decides who teh particpants are, what happens, where and when.

Question 4

What are the strengths of a labtory experminet?

Answer 4

• Easy to replicate because of its standardised proceudure
• Control over extrnous varible and control over teh IV can help to clearly define the cause and effect pf the results.

Question 5

What are the weaknesses of a labtory experiment?

Answer 5

• Low ecological validity as teh task and setting tends to be artfical and so the behaviours from particpants may be unatural
• There may be demand charcteristics or expermienter effects may cause teh results to be bias and inaccurate

Question 6

What is a field experiment?

Answer 6

Research that takes place in a natural enviroment, but the researcher still manipulsates on or more IV and measures effects on the DV.

Question 7

What are teh strengths of a field experiment?

Answer 7

• High ecological validity becaus eteh setting is natural so can eaisly relate o real life an dparticpants are mor elikly to act mor enaturlly in a more natural enviorment.
• Deman charcteristcs may not have an impact as teh particapnts may nto know tehy are being studied making results more reliable

Filed expermeints may use covert observations

Question 8

What is a weakness of a field expermient?

Answer 8

• Less control over extranous varibles which may make the results bias and inaccurtae. The study can be replicated easily.

Question 9

What si a natural expeirment?

Answer 9

Research takes place in a natural enviomrent. the researchers does not directly manipulate the IV instead the researcher observes a naturlly occuring IV effect son the DV. This could be a situation or an event.

Question 10

What is a strength of a natural expeirment?

Answer 10

• High ecological validity because the research take splace in a natural setting so can relate to real life
• Demand charteristic smay not have an effect as particpants may not be aware they are being studied.
• Can be sued in situation where it is ethically unaccaptable to manipulate the IV

Question 11

What si a weakness of a natural experiment?

Answer 11

• Cna be mro epxpenive an dtime consuming
• No control oev rextranous vairbles making teh reuslt contain possibel bias and the research becomes increaisngly harder to replicate.