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Forum: Psychology Statistics

Psychological statistics, quantitative psychology. Statistics in social sciences. Experimental design, data analysis.

  1. Arrow Sticky Thread Sticky: Please Read This Before Posting

    Please provide us with some basic information before we can give useful advice: 1. purpose of the study / research question / hypotheses, if...

    Started by quark‎, 11-10-2005 12:21 AM
    • Replies: 0
    • Views: 32,187
    11-10-2005, 12:21 AM Go to last post
  1. "bias" in chi-square GOF tests?

    Simple question (simple for some people) about the chi-square GOF test: Let's say we do a chi-square GOF test where the the expected values are...

    Started by bruin‎, 12-07-2015 02:14 PM
    • Replies: 1
    • Views: 3,595
    12-07-2015, 02:40 PM Go to last post
  2. "contextual effect" vs. "compositional effect" in multilevel models

    Chatbox convo follows: 05/16 16:13 Jake: lazar / spunky: when people speak of "contextual effects" in the multilevel / ed psych literature, are...

    Started by Jake‎, 05-16-2014 05:43 PM
    • Replies: 2
    • Views: 9,652
    05-16-2014, 06:10 PM Go to last post
  3. "Repeated measures" = "within subjects"?

    Hi everyone, I realised I have a doubt about a very simple concept in statistics, that of 'repeated measures'. I've always thought this is just...

    Started by wildetudor‎, 02-07-2014 06:42 AM
    • Replies: 5
    • Views: 2,460
    02-09-2014, 05:25 AM Go to last post
  4. 'same/different' response DV

    Morning all.. Im doing an assessment on picture matching, whereby participants are shown a picture scene for a split second, and then asked...

    Started by Liam‎, 03-26-2011 07:50 AM
    • Replies: 1
    • Views: 2,949
    03-26-2011, 06:51 PM Go to last post
  5. Poll Poll: (2) x 3 x 3 x 2 design experiment with a categorical DV

    Hi all - I've recently conduct a behavioral experiment with a (2) x 3 x 3 x 2 design. There are 4 categorical independent variable (one being a...

    Started by sulegun‎, 11-18-2012 05:55 PM
    behavioral experiment, categorical vairable, interaction, logit
    • Replies: 1
    • Views: 1,759
    11-19-2012, 06:40 AM Go to last post
  6. (interrater) reliability of average from Spearman-Brown?

    Dear TalkStats, I want to determine the association between open-ended responses on two occasions in an experiment. I am utilizing two...

    Started by Per‎, 07-23-2010 02:17 AM
    • Replies: 0
    • Views: 5,298
    07-23-2010, 02:17 AM Go to last post
  7. Question (SPSS) Meta-analysis about control variables in psychology research

    Hello everyone, I'm doing a research on the use of control variables in studies about 'the psychological contract'. I'm almost done with my...

    Started by Paolo‎, 11-03-2015 12:58 PM
    coding, control variables, psychological contract, spss
    • Replies: 0
    • Views: 1,436
    11-03-2015, 12:58 PM Go to last post
  8. (Uni)dimensionality issue - consultation

    Hi, I would need to support the unidimensionality assumption for IRT. I have about 25 dichotomous items in test. To do that... I did... 1) PCA...

    Started by Martin Marko‎, 11-10-2013 11:01 AM
    • Replies: 2
    • Views: 1,406
    11-22-2013, 10:59 AM Go to last post
  9. (Urgent) Missing Data- Missed completely one item throughout the study

    Hello Everyone, I ve been encounter one serious issue of missing data for my research. That is, i found one i forgot include one item in my...

    Started by iopkl88‎, 04-11-2012 05:17 AM
    • Replies: 13
    • Views: 2,664
    04-16-2012, 02:49 AM Go to last post
  10. Question 1 DV w. four levels, 2 IV's

    I'm testing the predictive effects of mood (positive/negative) and personality traits (extraversion and neuroticism) on music preference (interest...

    Started by nourb‎, 03-19-2016 05:19 AM
    experimental design, psychology statistics, spss
    • Replies: 1
    • Views: 2,677
    03-19-2016, 10:43 AM Go to last post
  11. 1-way vs 2-way repeated measures ANOVA with missing data

    I have performed an experiment where I tested how long it took users to reach various points on table and their perception of how difficult the task...

    Started by blooop‎, 01-16-2016 03:03 PM
    • Replies: 4
    • Views: 3,480
    01-17-2016, 12:11 PM Go to last post
  12. Question 10 different events --> moderator --> 9 symptoms

    Hey folks! I have a rather complicated analysis to compute, and am not 100% sure how best to do it. Design & Variables (1) Longitudinal...

    Started by Torvon‎, 11-13-2011 03:35 PM
    manova, regression, statistics
    • Replies: 4
    • Views: 2,825
    11-16-2011, 01:09 PM Go to last post
  13. Exclamation 2 way within subjects ANOVA effect size??

    I've got a 3x3 within subjects ANOVA done (with no help from my teacher, TA, or research partner mind you...) and I'm required to do follow...

    Started by denchft303‎, 02-28-2012 11:34 PM
    • Replies: 2
    • Views: 3,905
    02-29-2012, 12:58 AM Go to last post
  14. 2 x 2 nested within a third variable

    I hope someone can help me with this.. In one experiment we are trying to analyze, we have two crossed factors (B and C, 2 x 2 full factorial,...

    Started by carlos riveira‎, 01-11-2008 09:11 AM
    • Replies: 1
    • Views: 3,047
    01-24-2008, 04:41 PM Go to last post
  15. 2 x 3 (Repeated Measures?) ANOVA

    Hi guys! I would be very grateful if someone could just doublecheck my choice of data analysis. This is for a dissertation, and I do not have the...

    Started by somethingwithchocolate‎, 07-14-2015 05:58 AM
    2x3 design, repeated measures anova
    • Replies: 0
    • Views: 1,194
    07-14-2015, 05:58 AM Go to last post
  16. 2 x 3 mixed ANOVA - significant interaction... now what?

    Hi everyone This is pretty basic and I should know it but my brain is mush. I've got a 2 (treatment type - between subjects: treatment, control) x...

    Started by JLo‎, 10-15-2011 10:23 PM
    • Replies: 0
    • Views: 2,585
    10-15-2011, 10:23 PM Go to last post
  17. 2-Step Mediation With Multi-level Data

    Hello, I have data in which each participant responded 5 times to some questions. We want to run a mediation model in with X --> M1 --> M2 --> Y,...

    Started by einesi‎, 04-01-2016 10:05 AM
    mediation, multilevel model
    • Replies: 1
    • Views: 1,309
    04-02-2016, 02:17 AM Go to last post
  18. 2-way ANOVA

    I am looking at the effect of a drug on tumor volume in mice, at varying doses, over time, vs the vehicle control. I have taken the measurements at...

    Started by peroberts‎, 09-22-2007 06:32 PM
    • Replies: 2
    • Views: 3,822
    11-20-2007, 02:07 PM Go to last post
  19. Post 2X2 ANOVA - Bonferroni Correction required?

    Hey, I'm a psychology undergraduate and I'm a little confused with the statistics. My study is concerning gender, neuroticism and their role on...

    Started by beccalucy‎, 03-29-2011 07:45 AM
    • Replies: 2
    • Views: 11,026
    04-02-2011, 02:24 PM Go to last post
  20. 2x2 independent samples ANCOVA with non-homogeneous variance

    Here's the situation: 2 nominal IVs: Gender (F/M) and Language (Eng/Span) 1 interval DV: score on a neuropsych test (available as raw data or...

    Started by drsarahc‎, 02-27-2012 07:21 PM
    • Replies: 0
    • Views: 2,825
    02-27-2012, 07:21 PM Go to last post
  21. 2x2 mixed ANOVA - significant interaction with non significant follow up tests?

    Hi, I've run a study where high and low trait anxious participants were presented with 2 types of material (lets called 'social' and 'physical')...

    Started by freofan‎, 02-11-2013 11:31 PM
    • Replies: 0
    • Views: 2,845
    02-11-2013, 11:31 PM Go to last post
  22. 2X2X2 design.. what statistics should I use?

    Hi, I am doing a research with a 2X2X2 design: Between subjects (Positive Mood VS Negative Mood) Within subjects (Positive Stimuli 1 VS Negative...

    Started by TiffanyReed‎, 08-18-2014 10:24 AM
    ancova, anova, research, statistics
    • Replies: 0
    • Views: 2,787
    08-18-2014, 10:24 AM Go to last post
  23. 2x2x2 non-manipulated IVs - 6 DVs - Analysis quandry

    Ok, lets try this again. My original thread got no helpful comments and Ive been thinking hard about this for days to try and break it down better....

    Started by Penfold‎, 04-28-2011 02:39 PM
    • Replies: 1
    • Views: 3,313
    05-01-2011, 06:23 PM Go to last post
  24. 2x2x2 repeated measures ANOVA plus 3 personality scale measures

    Dear Stats Experts, I would really appreciate any help/comments on analyzing a data for a research study I'm conducting. First some information...

    Started by angelcaf‎, 02-11-2012 11:12 AM
    • Replies: 1
    • Views: 6,342
    02-14-2012, 05:06 PM Go to last post
  25. 2x2x2x10 within subject factorial design

    Problem solved

    Started by Loli‎, 09-27-2012 09:32 AM
    • Replies: 0
    • Views: 1,942
    09-27-2012, 09:32 AM Go to last post
  26. 2x2x2x2 factorial design help!!!

    Hi, I am doing my dissertation on the effect of demographics on peoples perceptions of youth crime and the age of accountability. I am meant to...

    Started by PattyBling‎, 03-08-2012 04:29 PM
    • Replies: 5
    • Views: 14,094
    03-21-2012, 11:20 PM Go to last post
  27. 2x2x3 ANOVA - Understanding interactions with Covariates

    Please help! I have run a 2x2x3 repeated measures ANOVA in SPSS. The variables refer to: 2 levels of age - adult and child tasks 2 levels of...

    Started by purplestar‎, 08-04-2010 04:44 PM
    • Replies: 0
    • Views: 12,421
    08-04-2010, 04:44 PM Go to last post
  28. Question 2x2x3 ANOVA interaction and error term formulas?

    Hey guys, I would really appreciate some help with some ANOVA formulas. :) So I'm running a 2 (between) by 2 (between) by 3 (within) design and I...

    Started by Suede‎, 05-30-2013 09:28 AM
    anova, interaction, split-plot
    • Replies: 0
    • Views: 3,162
    05-30-2013, 09:28 AM Go to last post
  29. 2x2x3 Anova, what will it tell me?

    Hi - I would like to compare the means of a DV (emotional intelligence) between three different variables, those being; 1) Gender (are the...

    Started by TruroJP‎, 11-28-2016 12:00 PM
    2x2 anova, anova, compare 2 means, statistical analysis
    • Replies: 2
    • Views: 2,806
    11-29-2016, 02:58 PM Go to last post
  30. 2X3 Anova: Interac is marg sig (p = .08) do I proceed to post hoc or increase power?!

    I am in a very frustrating place, so I would appreciate any help/brainstorming that you can muster! I am conducting analyses related to a...

    Started by Jamie Farquhar‎, 08-29-2011 04:32 PM
    2 Pages
    1 2
    marginal significance, two-way a
    • Replies: 23
    • Views: 9,863
    08-31-2011, 12:05 PM Go to last post
  31. Question 2x3 Between-Subjects ANOVA: insignificant corrected model vs. significant main effect

    Dear statistics experts, I cannot seem to find a solution to an ANOVA issue I encountered lately: The corrected model does not become...

    Started by StefanBinder30‎, 07-12-2011 04:54 AM
    • Replies: 2
    • Views: 5,916
    07-14-2011, 09:49 AM Go to last post
  32. 2x3 Experiment Analysis

    Hey guys this is my first post to this site, please be kind. I am working on an 2x3 experiment design. Just looking for some insight on the stats....

    Started by Loremac‎, 11-10-2015 04:15 PM
    • Replies: 1
    • Views: 1,457
    01-30-2016, 05:20 PM Go to last post
  33. 3 Categories dependent variable

    Hello! Want to know what test to use in SPSS for predicting a 3-category dependent variable with the independent also being categorical (2...

    Started by Wanttolearn‎, 05-28-2010 05:13 PM
    • Replies: 4
    • Views: 4,448
    05-30-2010, 12:39 PM Go to last post
  34. 3 experiments and the same 3 scales as DV - run Factorial Analysis together or sep

    Hi! I realized three experiments (varying only the marketing context) and used as dependent variables the same three scales (attitude, purchase...

    Started by fabiorfborges‎, 11-30-2015 06:40 AM
    experiments, factor analysis
    • Replies: 1
    • Views: 1,169
    12-01-2015, 08:09 AM Go to last post
  35. Talking 3 variables are normally distributed - 1 is not - how to transform

    Hi, I have not done transformations before but need to do now. One of my 4 variables is skewed (skewness statistic/skewness stardard error =...

    Started by Helen53‎, 10-15-2014 03:34 AM
    • Replies: 4
    • Views: 2,139
    10-15-2014, 07:53 AM Go to last post
  36. 3 Way Mixed Factorial ANOVA

    Hi All, I'm running a 3 way Mixed factorial ANOVA and i'm wondering if such an analysis is at all sound/correct. First let me list my variables: ...

    Started by cslshopper‎, 05-24-2012 04:15 PM
    • Replies: 2
    • Views: 4,475
    05-25-2012, 09:30 AM Go to last post
  37. 3 ways to decompose the strength of prediction in linear regression.

    I am wondering how to explain the three ways that the strength of prediction in linear regression can be decomposed. I need to explain using words...

    Started by Maybel‎, 03-26-2013 07:23 PM
    • Replies: 5
    • Views: 3,230
    02-03-2015, 01:13 AM Go to last post
  38. 3 x 2 Design using ANOVA - questions about significant interaction

    Hi, I'm doing a 3 (12, 14, 16 year olds) x 2 (male, female) design investigating moral development in children/adolescents. I have decided to use...

    Started by melliehop‎, 09-09-2012 08:57 AM
    • Replies: 1
    • Views: 1,600
    09-15-2012, 10:20 PM Go to last post
  39. 3 X 2 X 2 mixed design

    Hi all, First time posting. I am having trouble 1) figuring out spss output for and 2) interpreting findings for a study I conducted with a 3...

    Started by kme‎, 04-08-2015 02:36 PM
    3-way interaction, mixed design, spss output
    • Replies: 0
    • Views: 1,988
    04-08-2015, 02:36 PM Go to last post
  40. 3*3 Mixed ANOVA - non parametric test to use??

    Quite simple really. The dependent variable procures ordinal data - I have 2 related factors and 1 unrelated factor. No idea what NP test is...

    Started by psychonut26‎, 07-12-2013 05:24 AM
    • Replies: 0
    • Views: 1,749
    07-12-2013, 05:24 AM Go to last post
  41. 3-way ANOVA with unequal sample sizes (between-groups)

    Dear smart people, I am currently finishing my Master's in International Business Communication and have run into a problem with my data. I was...

    Started by alanacrs‎, 08-04-2016 05:53 AM
    anova, between-group, three-way anova, unequal sample sizes
    • Replies: 0
    • Views: 1,913
    08-04-2016, 05:53 AM Go to last post
  42. 3-way interaction help--Am I doing the right test?

    Hi Everyone! :wave: I'm hoping someone can give me some suggestions with an issue I'm having with my dissertation analyses. The background...

    Started by scubapuppy‎, 12-22-2010 08:59 AM
    • Replies: 0
    • Views: 4,445
    12-22-2010, 08:59 AM Go to last post
  43. 3x2 factorial design: which test is better?

    Hi all, I need to analyze a 3x2 factorial design (3 treatments x 2 gender) and I'd like to hear your suggestions. A population of rabbits was...

    Started by trimz79‎, 11-23-2009 05:02 AM
    • Replies: 2
    • Views: 20,182
    11-24-2009, 06:37 AM Go to last post
  44. 4 X 2 Chi Square with small n

    I'm trying to run a chi-square looking at ethnicity (4) across group (3). Some of my cells have less than n = 5. I've been unable to locate any...

    Started by evrobinson‎, 03-29-2013 10:10 PM
    • Replies: 3
    • Views: 2,049
    04-08-2013, 08:16 AM Go to last post
  45. 4x2 factorial design analysis help

    Hi, I have conducted an experiment to determine the influence of water stress and harvest time on KC value. There are 6 replications and 4 levels of...

    Started by vmannam12‎, 09-22-2010 10:54 AM
    • Replies: 1
    • Views: 8,370
    09-22-2010, 05:30 PM Go to last post
  46. 5 Factor Personality Traits and Employee Engagement

    Hello, I have just graduated, interning at a company and have been asked to find out what type of personalities we have here, and the relationship it...

    Started by thedonone‎, 07-07-2015 10:20 AM
    • Replies: 0
    • Views: 1,298
    07-07-2015, 10:20 AM Go to last post
  47. 95% confidence interval

    Hi, Can anyone tell me what constitutes a wide and narrow range in confidence intervals and in what way would you report them in results ? ...

    Started by bella25‎, 08-11-2011 08:24 AM
    • Replies: 2
    • Views: 4,902
    08-11-2011, 01:27 PM Go to last post
  48. 95% confidence intervals and null hypothesis

    if a 95% confidence interval for a sample mean is (-1.23; 2.68). what would be tthe inferential decision made from a null hypothesis test when (i)...

    Started by mhakmana‎, 03-27-2012 05:46 AM
    95% confidence interval, null hypothesis, odds ratio
    • Replies: 3
    • Views: 3,312
    03-28-2012, 06:23 AM Go to last post
  49. ?? 2 way ANOVA with both Between and a 2 way ANOVA with one between and one within ??

    Hello all, Can someone please explain how this works, as my text book just BRIEFLY touched on it. Lets say I want to run two studies. ...

    Started by allie_moore‎, 11-10-2016 04:57 PM
    • Replies: 2
    • Views: 2,915
    11-12-2016, 02:32 PM Go to last post
  50. Exclamation ??multi-level/hierarchical or cluster analysis??

    Hi! I hope there's somebody who can help me with my thesis analysis (hierarchical logistic regression). i know the basic concepts and am actually...

    Started by barbi‎, 11-02-2005 09:58 PM
    • Replies: 4
    • Views: 5,154
    12-05-2005, 03:48 AM Go to last post
  51. A 6th response option ("I don't know") added to a 5-point Likert scale. Is data lost?

    Hello, everyone, I need a little bit of help salvaging the data from a questionnaire. One of my colleagues applied a questionnaire, but...

    Started by streamline55‎, 04-12-2016 02:09 AM
    convert, imputation, likert, transform
    • Replies: 9
    • Views: 1,315
    04-15-2016, 12:54 PM Go to last post
  52. a big problem

    hi i m in trouble because of my survey. for collection of data, we apply non-probability sampling distribution. in questionnaire, all the independent...

    Started by jiya‎, 03-23-2012 08:44 AM
    • Replies: 0
    • Views: 1,737
    03-23-2012, 08:44 AM Go to last post
  53. A couple of questions about transforming data

    Hi folks, I haven't had to play with statistics for some time and I'm apparently a little (read: very) rusty. I'm having trouble with the following:...

    Started by Grigori‎, 04-18-2012 08:41 AM
    • Replies: 0
    • Views: 1,652
    04-18-2012, 08:41 AM Go to last post
  54. A desperate call for help

    Hi, I am working on my psychology project and struggling big time with stats. If some lovely person could have a quick look at what I have done...

    Started by melissa88‎, 02-23-2013 08:12 AM
    • Replies: 1
    • Views: 1,442
    02-23-2013, 11:08 AM Go to last post
  55. a flooding problem

    I am a little stuck here with my stats analysis, wondering if anyone could shed some light? I am testing whether long levee banks (used to protect...

    Started by Celine‎, 07-24-2007 01:59 AM
    • Replies: 1
    • Views: 2,221
    08-02-2007, 02:52 PM Go to last post
  56. A Great Book for Multivariate / Advanced Statistical Methods

    I highly recommend a book by Craig A. Mertler and Rachel A. Vannatta: Advanced and Multivariate Statistical Methods, 3rd ed. Practical...

    Started by JohnM‎, 01-20-2006 02:10 AM
    • Replies: 1
    • Views: 3,857
    10-23-2006, 10:17 PM Go to last post
  57. A little help needed...

    I've been torturing myself with an introduction section to a research paper for about two weeks. Consequently, my mind is fried, and I am running out...

    Started by beesknees‎, 03-27-2011 05:27 PM
    • Replies: 2
    • Views: 2,533
    03-28-2011, 04:18 AM Go to last post
  58. a method for calculating the proportional mediating effect

    Dear All Hi I am Amir from Iran where we have no a well know psychologist especially in quantitative.I am not good in mediation. I used Preacher...

    Started by amirpakpour‎, 08-14-2013 08:34 AM
    mediating effect, mediation, r-squared
    • Replies: 0
    • Views: 3,015
    08-14-2013, 08:34 AM Go to last post
  59. A non-parametric ANOVA for nominal data

    Hi, I have a research project that has two groups, I'm trying to analyse people's response to an open ended question that I have coded...

    Started by capri87‎, 09-29-2011 07:12 AM
    non-parametric anova, qualitative analysis
    • Replies: 4
    • Views: 5,877
    09-30-2011, 05:08 AM Go to last post
  60. A person says he or she can cast spells and bring his/her clients fame and fortune

    What are the practical details of the simplest go/no-go test that can be run to show this to be patently false or to have actually some truth to it?

    Started by Outlier‎, 06-19-2011 12:08 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 5,154
    06-28-2011, 08:18 PM Go to last post

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