+ Reply to Thread
Results 1 to 3 of 3

Thread: Accelerated Bootstrap - mediation

  1. #1
    Points: 828, Level: 15
    Level completed: 28%, Points required for next Level: 72

    Posts
    16
    Thanks
    4
    Thanked 0 Times in 0 Posts

    Accelerated Bootstrap - mediation




    Howdy!

    Can anyone explain accelerated bootstrap to me? I've got it reported in a research report and I can't really figure it out. Basically a couple of covariates were significant between groups so they ran a mediation analysis on them to see if they could account for the pattern of results. But they used this accelerated bootstrap procedure which I can't even find anything on in Tabachnik and Fidel!

    Cheers,

  2. #2
    TS Contributor
    Points: 22,432, Level: 93
    Level completed: 9%, Points required for next Level: 918
    spunky's Avatar
    Location
    vancouver, canada
    Posts
    2,135
    Thanks
    166
    Thanked 537 Times in 431 Posts

    Re: Accelerated Bootstrap - mediation

    it's a type of estimate that you use when the boostrap distribution has a bias, non constant variance, etc... in simpler terms, if the boostrap distribution is not symmetric chances are the endopints of the confidence intervals may be a little off and you'd probably be better off considering the accelerated boostrap...

    for a better intro to the bootstrap method: http://www.wiley.com/legacy/wileychi...df/Vab028-.pdf

    (ps- just between you and i, T & B is a pretty limited to only cover the essentials, they leave out a lot of the stuff you need to understand more advanced techniques...
    for all your psychometric needs! https://psychometroscar.wordpress.com/about/

  3. #3
    Points: 828, Level: 15
    Level completed: 28%, Points required for next Level: 72

    Posts
    16
    Thanks
    4
    Thanked 0 Times in 0 Posts

    Re: Accelerated Bootstrap - mediation


    Thanks spunky, that is a helpful reference - I've saved it for future reference too! I also found preacher and hayes 2004 on mediation and that's helped me 'get it' a bit more too.

+ Reply to Thread

           




Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats