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, 12:51:36 am

Author Topic: disadvantage of random allocation?  (Read 2808 times)  Share 

0 Members and 1 Guest are viewing this topic.

akay

  • Victorian
  • Adventurer
  • *
  • Posts: 8
  • Respect: 0
  • School Grad Year: 2012
disadvantage of random allocation?
« on: June 12, 2012, 12:46:49 am »
0
was wondering what the disadvantages of random allocation were?
all i can think of are advantages  :-\

for disadvantages could it be that the participants aren't matched based on their characteristics OR does it cancel out if the researcher arranges the sample so that participants do have the same/similar characteristics, therefore where they go (experiment/control) it doesn't matter and just cancels out the only disadvantage I could think of?

also was wondering if there was more than one disadvantage?

thanks in advance  ;D

Limista

  • Victorian
  • Forum Leader
  • ****
  • Posts: 944
  • Respect: +63
  • School Grad Year: 2013
Re: disadvantage of random allocation?
« Reply #1 on: June 12, 2012, 08:08:07 am »
0
I don't think there are any diadvantages of random allocation actually! This is actually what eliminates the confounding variable of participants characteristics, since it ensures that every member of a sample has an equal chance of being divided into the experimental or control condition.
Bachelor of Biomedicine @ The University of Melbourne (II) 2014-2016
Follow me on my blog

pubsquash

  • Guest
Re: disadvantage of random allocation?
« Reply #2 on: June 12, 2012, 08:48:53 am »
0
I think that because of it's random nature, that there's a chance that the experimental group and control group might be unbalanced, for example there might be more males in one group and more females in the other group.

DylanBurrowes

  • Victorian
  • Forum Regular
  • **
  • Posts: 83
  • Respect: 0
  • School Grad Year: 2013
Re: disadvantage of random allocation?
« Reply #3 on: June 12, 2012, 11:07:40 am »
0
I think also that unless you have a large sample, participant characteristics won't be extremely balanced, if that makes sense...
2012: Psychology (49) and Music Performance (45)
2013: English, Mathematical Methods (CAS), Chemistry, Biology

ATAR Aim: 100

Limista

  • Victorian
  • Forum Leader
  • ****
  • Posts: 944
  • Respect: +63
  • School Grad Year: 2013
Re: disadvantage of random allocation?
« Reply #4 on: June 12, 2012, 12:58:33 pm »
0
I think also that unless you have a large sample, participant characteristics won't be extremely balanced, if that makes sense...
I think that because of it's random nature, that there's a chance that the experimental group and control group might be unbalanced, for example there might be more males in one group and more females in the other group.
But the likelihood of this is very less I'm pretty sure - that's why experimenters use random allocation.  :)
Bachelor of Biomedicine @ The University of Melbourne (II) 2014-2016
Follow me on my blog