FREE lectures this September + October | HSC Head Start + Exam Revision: book here | QCE Head Start: book here | VCE Exam Revision: book here

Welcome, Guest. Please login or register.

September 17, 2019, 08:44:06 pm

Author Topic: Cross sectional studies  (Read 504 times)  Share 

0 Members and 1 Guest are viewing this topic.

lleeea

  • Forum Regular
  • **
  • Posts: 94
  • dont judge a fish by its ability to climb a tree
  • Respect: 0
Cross sectional studies
« on: September 24, 2018, 09:04:23 pm »
0
according to the study design, we need to know about cross sectional studies as an experimental design. many notes dont cover it. my textbook covers it but it explains it in a way too complicated way. can someone plz simply explain what we would need to know about cross sectional studies for the exam (i.e. what it is, how it is administered, its pros and cons, etc).

vox nihili

  • National Moderator
  • Great Wonder of ATAR Notes
  • *****
  • Posts: 5283
  • Respect: +1364
Re: Cross sectional studies
« Reply #1 on: September 24, 2018, 09:15:30 pm »
+1
according to the study design, we need to know about cross sectional studies as an experimental design. many notes dont cover it. my textbook covers it but it explains it in a way too complicated way. can someone plz simply explain what we would need to know about cross sectional studies for the exam (i.e. what it is, how it is administered, its pros and cons, etc).

Tell us first what you already know :) You'll get a lot further that way and remember more of the info.
MED INTERVIEW TUTORING PM to secure your place early, as they fill up quickly!

Join ATARNotes Footy Tipping

2013-15: BBioMed (Biochemistry and Molecular Biology), UniMelb
2016-20: MD, UniMelb
2019: MPH, UniMelb
Year I: BIOL10002 BIOL10003 CHEM10006 MAST10011 MAST10016 PHYC10007 SPAN10001 SPAN10002
Year II: BCMB20005 BIOM20001 BIOM20002 CLAS10022 GENE20001 SPAN20020 SPAN30014
Year III: BCBM30001 BCMB30002 BCMB30010 BIOM30001 BIOM30002 PHRM30008

lleeea

  • Forum Regular
  • **
  • Posts: 94
  • dont judge a fish by its ability to climb a tree
  • Respect: 0
Re: Cross sectional studies
« Reply #2 on: September 24, 2018, 09:21:17 pm »
0
Tell us first what you already know :) You'll get a lot further that way and remember more of the info.
i dont know much, but i know that its about studying age related differences among participants from different life experiences and backgrounds

peter.g15

  • Trendsetter
  • **
  • Posts: 128
  • Respect: +25
Re: Cross sectional studies
« Reply #3 on: September 24, 2018, 10:34:41 pm »
+5
i dont know much, but i know that its about studying age related differences among participants from different life experiences and backgrounds

Yep, that's a basic idea of a cross-sectional study. Cross sectional studies allow researchers to take small samples from different age groups, measure a certain trait and then compare it and try to draw a correlation between age and the measured thing.

For example, if I wanted to look at number of hours of sleep people of different ages get, I might do a cross-sectional study. So I would get say 50 people from each age group of : 0-12 months, 3-5 years, 10-12 years, 20-25 years, etc. etc. Obviously the number of cross-sections you get depends on the amount of money (not relevant, but good to know). I might then ask them to fill out a sleep report for a week and note down how many hours of sleep they get. Then, I'd collect all this data together and compare the results between the ages.

Some potential benefits:
- Quicker and easier than longitudinal studies (don't need to keep track of people for so many years)

Some potential limitations/weaknesses:
- Subject to cohort effects, these are effects that are specific to one particular age group due to a certain event that occurred in their lifetime
- Can require a large number of participants --> costly and difficult to organise

There are probably some more strengths and weaknesses to it, but these are the first that come to mind :)
2017: Psychology [50] | Accounting [45]
2018: Chemistry [49] | Biology [46] | English Language [41] | Mathematical Methods CAS [40] |  | UMEP Psychology [4.5]
ATAR: 99.50
UMAT: 91st
2019 - 23: Bachelor of Medical Science and Doctor of Medicine @ Monash University

FULL Tutoring in 2019

Offering Medical MMI Tutoring for 2020 Entry. DM for information!

lleeea

  • Forum Regular
  • **
  • Posts: 94
  • dont judge a fish by its ability to climb a tree
  • Respect: 0
Re: Cross sectional studies
« Reply #4 on: September 25, 2018, 09:21:13 am »
0
Yep, that's a basic idea of a cross-sectional study. Cross sectional studies allow researchers to take small samples from different age groups, measure a certain trait and then compare it and try to draw a correlation between age and the measured thing.

For example, if I wanted to look at number of hours of sleep people of different ages get, I might do a cross-sectional study. So I would get say 50 people from each age group of : 0-12 months, 3-5 years, 10-12 years, 20-25 years, etc. etc. Obviously the number of cross-sections you get depends on the amount of money (not relevant, but good to know). I might then ask them to fill out a sleep report for a week and note down how many hours of sleep they get. Then, I'd collect all this data together and compare the results between the ages.

Some potential benefits:
- Quicker and easier than longitudinal studies (don't need to keep track of people for so many years)

Some potential limitations/weaknesses:
- Subject to cohort effects, these are effects that are specific to one particular age group due to a certain event that occurred in their lifetime
- Can require a large number of participants --> costly and difficult to organise

There are probably some more strengths and weaknesses to it, but these are the first that come to mind :)
thankyou so much. helped a lot

studyingg

  • Trendsetter
  • **
  • Posts: 145
  • Respect: +14
Re: Cross sectional studies
« Reply #5 on: September 25, 2018, 08:38:26 pm »
0
Yep, that's a basic idea of a cross-sectional study. Cross sectional studies allow researchers to take small samples from different age groups, measure a certain trait and then compare it and try to draw a correlation between age and the measured thing.

For example, if I wanted to look at number of hours of sleep people of different ages get, I might do a cross-sectional study. So I would get say 50 people from each age group of : 0-12 months, 3-5 years, 10-12 years, 20-25 years, etc. etc. Obviously the number of cross-sections you get depends on the amount of money (not relevant, but good to know). I might then ask them to fill out a sleep report for a week and note down how many hours of sleep they get. Then, I'd collect all this data together and compare the results between the ages.

Some potential benefits:
- Quicker and easier than longitudinal studies (don't need to keep track of people for so many years)

Some potential limitations/weaknesses:
- Subject to cohort effects, these are effects that are specific to one particular age group due to a certain event that occurred in their lifetime
- Can require a large number of participants --> costly and difficult to organise

There are probably some more strengths and weaknesses to it, but these are the first that come to mind :)


Do you know why its considered an experimental research design? Even though it does not involve the manipulation of variables?

peter.g15

  • Trendsetter
  • **
  • Posts: 128
  • Respect: +25
Re: Cross sectional studies
« Reply #6 on: September 26, 2018, 09:33:24 am »
+1

Do you know why its considered an experimental research design? Even though it does not involve the manipulation of variables?

I don't believe it is an 'experimental' research design, this is because, as you said, it doesn't involve manipulatino of variables. I think it's better classified as a correlational or non-experimental design. Not sure if it's really needed for VCE psych though, so don't stress too much over it
2017: Psychology [50] | Accounting [45]
2018: Chemistry [49] | Biology [46] | English Language [41] | Mathematical Methods CAS [40] |  | UMEP Psychology [4.5]
ATAR: 99.50
UMAT: 91st
2019 - 23: Bachelor of Medical Science and Doctor of Medicine @ Monash University

FULL Tutoring in 2019

Offering Medical MMI Tutoring for 2020 Entry. DM for information!