Personal investigation- sleep study Flashcards
What’s a quasi experiment?
The iv isn’t manipulated by the researcher, its naturally occurring and the iv is a difference between people that exists (i.e. gender or age)
Researcher examines the effect of the variable on the dependant variable
The different qusais are difference (age) or natural (natural disaster)
What is the definition of sleep?
A periodic, natural, reversible and near total loss of consciousness
What is our study?
A quasi experiment on age and sleep
What is our independent variable?
People aged 25 and over
Children aged 12-25
When the prefrontal lobe develops
What is our dependant variable?
Hours of sleep, their score on the Pittsburgh quality sleep index
What can be some confounding variables?
Variables that aren’t being manipulated or manipulated by the researcher, that affect some participants behaviour but not others
-Caffeine intake
-Sleep medication
-subjects taken
-Sharing a bedroom at house
-Everyday activity’s
What can be some extraneous variables?
Variables in a study that aren’t manipulated by the researcher but affects the result (DV) of All participants equally
e.g. Temp, noise, light
What direction are we taking our hypothesis?
One tailed directional
Our hypothesis?
There will be an increase in sleep quality scores on the psqi in participants aged 25 and above compared to those aged 12-25 years old
Our null hypothesis?
There will be no significant difference in sleep quality scores on the psqi in participants aged 25 and above compared to those aged 12-25 years old
Methodology of study- How do we use the quasi experiment?
The age of participants is naturally occuring
Methodology of study- what technique did it?
Self report
P’s record information about themselves and their sleep patterns via questionnaires, in this case the psqi
What experimental design did we use?
Independent groups
The groups of age categorys
What sampling did we use and why?
Opportunity
Easier than systematic as we dont need a list of all students, we can just take who’s available
Quick as we don’t have to workout groups
Suitable
What is a target population?
Who in the society does the study relate to and who can it be applied to and is it still relevant
Who is our sample frame?
Teachers and student in notre dame
Ethics in our study- privacy?
May invade privacy asking questions on psqi, but questionaries will be destroyed once final score been calculated
Ethics in our study- Confidentiality?
P’s creating own sort code to not be identified
house number + dob
Ethics in our study- Deception?
P’s offered a brief with clear instructions and info before they consent
Ethics in our study- Right to withdraw?
Before the study, during the study and after
Ethics in our study- Informed concent?
Teachers get permission from themselves
Head teacher gives consent by proxy
Ethics in our study- Protection from harm?
Offered help in the debrief with a source to help
Mean of our results under 25?
7.86 reoccurring
Mean of our result over 25?
8.46
Median of our result 25-?
7
Median of our result 25+?
7
Mode of our result 25-?
7
Mode of our result 25+?
7
Range of our result 25-?
15
Range of our result 25+?
-16
Standard deviation 25-?
4.206495355
4.21
Standard deviation 25+?
4.889736579
7.89
What graph have we chosen to represent data?
Bar chart
What inferential statistics test will we use and why?
Mann Whitney U test
We have a difference
Use independent data (independent groups)
And we use ordinal+
According to the mann whitney u, what’s our observed value?
107.5
According to the mann whitney u, what’s our critical value?
72
Are our result significant?
No
What can we conclude from our study?
Age does not affect sleep significantly
-To help expand do study elsewhere
How can we improve our study?
-Further research at different schools
-Ethics studying on children
-Taking children out of lesson distracting then, could have used break or lunch
