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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: 26,084
    11-10-2005, 12:21 AM Go to last post
  1. Ranking means taking into consideration SD (or SE)

    Hi everyone, I have a question about how to rank means taking into consideration SD (or better yet SE). Here's the situation (simplified): ...

    Started by SCross‎, 03-31-2014 03:55 AM
    • Replies: 3
    • Views: 665
    03-31-2014, 10:51 AM Go to last post
  2. Hi

    Hi, Am facing a problem in analysis. Hope anyone can help. I have a two of words- one belongs to BB and another to LB. I have analyzed the...

    Started by ABI‎, 03-28-2014 12:19 AM
    • Replies: 0
    • Views: 604
    03-28-2014, 12:19 AM Go to last post
  3. Conceptual Question: Experiment where you analyze different skew between conditions.

    Hi all, I had a psychology stats exam yesterday and one question was: 'Present a hypothetical experimental question in which the main interest...

    Started by gdbasketcase1992‎, 03-22-2014 06:10 AM
    experiment analysis, experiment design, skew
    • Replies: 7
    • Views: 1,091
    03-25-2014, 06:27 PM Go to last post
  4. Question Choosing the correct analysis: repeated measures with dichotomous DV

    I am trying to analyze some repeated measures data with a dichotomous dependent variable. My design is as such: 16 participants viewed three sets of...

    Started by kw1130‎, 03-25-2014 03:35 PM
    • Replies: 0
    • Views: 804
    03-25-2014, 03:35 PM Go to last post
  5. Statiscally comparing correlations?

    How can I statically compare an uncorrected correlation between A and B, and a corrected (C) correlation between A and B? Taking into account that A...

    Started by EllenJanssen‎, 03-24-2014 09:49 AM
    • Replies: 3
    • Views: 1,167
    03-25-2014, 03:24 AM Go to last post
  6. What test would you use?

    Hi all, I was wondering what tests you would use on these figures, I've already done my analysis but was wondering if there's anything better out...

    Started by QueenOfStats‎, 03-23-2014 09:01 AM
    • Replies: 1
    • Views: 643
    03-24-2014, 10:59 PM Go to last post
  7. Significance and Discriminant Function Analysis

    Hi, If I have specific a-priori assumptions to test with a DFA does this lessen the need for the Wilks Lambda ouput being significant? Thanks...

    Started by baddeleywm‎, 03-24-2014 11:30 AM
    • Replies: 0
    • Views: 657
    03-24-2014, 11:30 AM Go to last post
  8. repeated measures ANOVA with quadratic covariate??

    Hi, I have some data that I am struggling to analyse. Any advice would be much appreciated. My DV is a repeated measure with two levels (test...

    Started by achan‎, 03-24-2014 05:56 AM
    • Replies: 0
    • Views: 1,221
    03-24-2014, 05:56 AM Go to last post
  9. Mauchly's Test Output

    (All participants participated in two trials, with three conditions in each trial.. Each participants' accuracy and reaction time was measured for...

    Started by Sarika‎, 03-23-2014 07:39 AM
    • Replies: 0
    • Views: 558
    03-23-2014, 07:39 AM Go to last post
  10. ANOVA for a partitioned sample

    Hello, I'm a bit new to statistics and I'm currently analysing the results of an experiment and not sure how to proceed... So first a small...

    Started by masch‎, 03-21-2014 04:32 AM
    • Replies: 2
    • Views: 885
    03-21-2014, 10:15 AM Go to last post
  11. Comparing 2 effects simultaneously - which test to use?

    Hi, I am conducting research on the effects of time-of-day and sleep on memory on rats. There are 2 groups: one group that sleeps between memory...

    Started by luako‎, 03-18-2014 10:52 AM
    • Replies: 3
    • Views: 739
    03-20-2014, 11:02 AM Go to last post
  12. Roy Bargmann Stepdown Analysis

    Hi, I am presently trying to run the Roy bargmann Stepdown Analysis with the following code: DATASET ACTIVATE DataSet1. MANOVA...

    Started by baddeleywm‎, 03-20-2014 07:17 AM
    • Replies: 0
    • Views: 2,369
    03-20-2014, 07:17 AM Go to last post
  13. To transform or not to transform?

    Hi, I'm currently working on the effect of video games and music on aggressive behaviour. The independent variables are type of game (FPS/Puzzle) and...

    Started by Kakazam‎, 03-18-2014 12:36 PM
    • Replies: 11
    • Views: 1,403
    03-20-2014, 06:49 AM Go to last post
  14. Help- SPSS non significant two way ANOVA

    Hi, Thankyou in advance for reading my post. I am currently doing a two way anova for the effect of (gender) and (physically active or not),...

    Started by clh2‎, 03-19-2014 08:38 AM
    • Replies: 4
    • Views: 1,212
    03-19-2014, 09:04 AM Go to last post
  15. MANOVA help please

    I was wondering if anyone can help, I have completed a MANOVA for my psychology dissertation however the assumption of Multicollinearity and...

    Started by missgjb‎, 03-19-2014 05:47 AM
    • Replies: 0
    • Views: 606
    03-19-2014, 05:47 AM Go to last post
  16. need help in my psychological research

    Hi. I am student from Slovakia. Sorry, my english is not good. I need help with my research. I am doing research, where i compare symptoms (in...

    Started by Taini‎, 03-18-2014 01:41 PM
    • Replies: 4
    • Views: 767
    03-19-2014, 03:43 AM Go to last post
  17. PEAS help, deciding whether my data is normal and then which test to use

    Hi, I am currently doing my dissertation. My supervisor has said to me that I can choose whether to ignore non-normal data or not. However I am...

    Started by fellis‎, 03-17-2014 06:56 AM
    • Replies: 7
    • Views: 1,435
    03-18-2014, 11:19 AM Go to last post
  18. Help with multiple covariates and moderators in analyses

    Hi all, I am trying to figure out the appropriate analyses for a project and I am hitting a bit of a wall. My primary question involves whether...

    Started by spiritcaravan‎, 03-17-2014 02:11 PM
    • Replies: 0
    • Views: 604
    03-17-2014, 02:11 PM Go to last post
  19. Question Need data analysis direction.

    Im a grad student (clinical psychology) and research neophyte and need some direction. Once I gain statistical ground I would be more than happy to...

    Started by Neophyte5‎, 03-16-2014 07:35 PM
    data analysis, psychology, quasi-experimental
    • Replies: 0
    • Views: 626
    03-16-2014, 07:35 PM Go to last post
  20. Non-parametric data analysis - 2 questions

    I have 1 independent variable with 3 levels and four dependent continuous variables The four dependent variables within the levels of the IV...

    Started by hannou‎, 03-16-2014 01:53 PM
    • Replies: 1
    • Views: 580
    03-16-2014, 03:29 PM Go to last post
  21. Analysis of linear regression

    Hi guys, I am working on my dissertation and I stuck on basics... Can you please remind me few things. I've done linear regression of...

    Started by aleksss‎, 03-16-2014 04:37 AM
    • Replies: 0
    • Views: 639
    03-16-2014, 04:37 AM Go to last post
  22. Please Point Me To Resources I Can Use To Interpret This Data

    Okay, So there's this forum devoted to a communication-based game that, in each game, divides players into two different groups. The groups...

    Started by Psyche‎, 03-16-2014 02:42 AM
    • Replies: 0
    • Views: 636
    03-16-2014, 02:42 AM Go to last post
  23. Which test of reliability to use?

    Hi, I am unsure of if I am to use different tests of reliability for different types of data sought by the same questionnaire, or if one test may...

    Started by Riley‎, 03-13-2014 11:49 AM
    cronbach's alpha, data type, reliability test
    • Replies: 1
    • Views: 821
    03-15-2014, 10:46 PM Go to last post
  24. What do I do once I have found an order effect in a within subjects design?

    I have found an order effect in my repeated measures design and am having difficulty figuring out how to run further analyses that control for the...

    Started by kjm8675‎, 02-22-2014 02:22 PM
    • Replies: 4
    • Views: 996
    03-12-2014, 08:07 PM Go to last post
  25. Two way unrelated ANOVA

    Hi, I was wondering whether anybody could help me, i've ran the data in SPSS and can see I have found some significant findings. However I'm...

    Started by abcd123‎, 03-12-2014 04:23 PM
    • Replies: 0
    • Views: 671
    03-12-2014, 04:23 PM Go to last post
  26. Why impose equality constraints on the factor loadings?

    Hi all, I have a few basic SEM questions that I would love to get your feedback on: (1) I have recently read two articles where the authors decided...

    Started by myautumn28‎, 03-12-2014 12:57 PM
    • Replies: 2
    • Views: 1,008
    03-12-2014, 03:00 PM Go to last post
  27. Unequal Group Sizes

    Hello, I am presently examining questionnaire data and the two groups I am interested in examining are unequal: n = 25 and n = 118. The...

    Started by baddeleywm‎, 03-12-2014 04:35 AM
    • Replies: 4
    • Views: 1,217
    03-12-2014, 06:56 AM Go to last post
  28. Inter rater reliability (multiple raters, multiple items)

    Hello, I am struggling with inter rater reliability measure. I have measures of perceptions of different items performed by multiple raters....

    Started by Ted Brasil‎, 03-11-2014 06:08 AM
    • Replies: 0
    • Views: 974
    03-11-2014, 06:08 AM Go to last post
  29. please help with analysis confusion

    Hello Could you please help I am doing a study on leadership for my dissertation. I trying to find out which leadership style and the degree...

    Started by Codenamekid91‎, 03-09-2014 01:55 PM
    • Replies: 0
    • Views: 874
    03-09-2014, 01:55 PM Go to last post
  30. Question Power Analysis and Sample Size determination help!

    Hi all! I am new here so I hope my post is appropriate! I have searched the web and this forum and haven't been able to figure out how exactly...

    Started by carlyhylton‎, 03-08-2014 06:33 PM
    2 way anova, power analysis, psychology, sample size, sas
    • Replies: 5
    • Views: 1,154
    03-08-2014, 11:01 PM Go to last post
  31. Score for categorical data

    Hi! I'm looking for some method to create some kind of a general score for several categorical variables, all of them on Likert Scale. Any...

    Started by raphaelsaldanha‎, 03-05-2014 08:38 AM
    • Replies: 0
    • Views: 835
    03-05-2014, 08:38 AM Go to last post
  32. Unhappy Degrees of freedom don't match participants? (F-test)

    Hi everybody! I'm currently working on my Master thesis, which is going to be a meta-analysis (I hope..). Now me and my thesis partner ran into...

    Started by Jiske‎, 03-04-2014 08:32 AM
    • Replies: 4
    • Views: 2,323
    03-04-2014, 12:10 PM Go to last post
  33. Analysing Multiple Categorical Variables

    I am conducting a study about behavioural practices in a psychological setting (restrictive interventions). The purpose is to determine the...

    Started by Iainoh‎, 02-25-2014 07:10 AM
    • Replies: 8
    • Views: 1,258
    03-04-2014, 07:13 AM Go to last post
  34. One Factor Repeated Measures ANOVA questions

    Hi all, I have conducted a repeated measures ANOVA that has one factor with two levels. I also have a one between-subjects factor that has been...

    Started by GC92‎, 03-01-2014 09:58 AM
    anova, interpretation, one factor, psychology, regression, repeat measures, statisics
    • Replies: 1
    • Views: 1,087
    03-01-2014, 10:40 PM Go to last post
  35. Talking Rosenberg's Self-Esteem Scale

    I am working on my stats for a final year project and was wondering if anybody here could help answer a few questions? I am using SPSS. I am...

    Started by jcnimmer‎, 02-27-2014 01:14 PM
    • Replies: 2
    • Views: 2,653
    02-28-2014, 06:28 AM Go to last post
  36. If In doubt - which test is best? Para/non Para

    Hi, Which test is best to use with a small sample size? Parametric or non-parametric? (with even distribution), I've got a repeated measures...

    Started by Gpsych‎, 02-26-2014 02:52 PM
    non-parametric, small sample
    • Replies: 1
    • Views: 1,134
    02-28-2014, 12:20 AM Go to last post
  37. Which size effect with planned comparison?

    Hello. I couldn't find the answer to my question in the forum so sorry if it was already answered. I've conducted an ANOVA (repeated...

    Started by LeoN‎, 02-27-2014 04:36 AM
    • Replies: 0
    • Views: 823
    02-27-2014, 04:36 AM Go to last post
  38. Calculating effect size when conducting planned contrasts/comparisons

    Does anyone know how (if it is in fact possible) to calculate the effect size (say Cohen's d) between planned contrasts/comparisons? For example,...

    Started by Tanned Man‎, 02-25-2014 05:14 PM
    • Replies: 0
    • Views: 1,173
    02-25-2014, 05:14 PM Go to last post
  39. Reference to justify the use of bootstrap

    Dear all, My colleagues and I conducted a research involving a dichotomous outcome (i.e., the detection of an unexpected event in a particular...

    Started by Fgabarrot‎, 02-21-2014 01:10 AM
    binary dependent variable, bootstrap
    • Replies: 3
    • Views: 1,646
    02-24-2014, 03:14 PM Go to last post
  40. Question Reliability - ω Omega (total/hierarchical

    Hola! I would like to ask about the total (ωt) and hierarchical omega (ωh) as far as interpretation differences are concerned. And one more...

    Started by Martin Marko‎, 02-24-2014 01:17 PM
    • Replies: 0
    • Views: 13,350
    02-24-2014, 01:17 PM Go to last post
  41. Hierarchical multiple regression, from a forum and stats novice

    Hi, I have data from 584 people comprising five personality factors scored for each individual, and their reaction times on a test following random...

    Started by Buff Davis‎, 02-22-2014 02:20 PM
    • Replies: 0
    • Views: 787
    02-22-2014, 02:20 PM Go to last post
  42. Post Which statistical analysis needs to be run ? ANOVA/Paired T-Tests

    So i trying to figure out what analysis i need to use,but im a tad stuck. Im doing a pre and post test design. So a primary school with a...

    Started by retroandbeyond‎, 02-22-2014 08:38 AM
    anova, pre post test analysis, ttest
    • Replies: 0
    • Views: 722
    02-22-2014, 08:38 AM Go to last post
  43. Smile One way ANOVA/ Repeated measures help to choose a test to run

    Hi all, I have some questions that I need to be working on that are related to one way anova and repeated measures. I am not quite sure what tests...

    Started by ari2015‎, 02-18-2014 01:30 AM
    • Replies: 3
    • Views: 2,342
    02-22-2014, 04:22 AM Go to last post
  44. Red face Paired samples t test or ANOVA

    Good evening, I am glad I found this forum, as I have what some might find to be a simple question, but what is a neural pathway creating question...

    Started by Prohet‎, 02-18-2014 11:33 PM
    • Replies: 5
    • Views: 1,227
    02-19-2014, 03:40 PM Go to last post
  45. Comparison of psychophysical methods for sensitivity to small changes

    Hi all I have two different psychophysical clinical test methods I can use to measure a particular quality. For the sake of explanation, lets say...

    Started by Zorro‎, 02-14-2014 04:53 PM
    evaluate, physhophysics, test method
    • Replies: 1
    • Views: 1,060
    02-18-2014, 05:20 PM Go to last post
  46. Lightbulb Comparing populations of Twins

    Hey guys, first post here, would really appreciate some clarification on a few things in my study. I'm currently performing an online study in...

    Started by Schwartz Champ‎, 02-13-2014 10:50 AM
    • Replies: 0
    • Views: 842
    02-13-2014, 10:50 AM Go to last post
  47. NO COMMON FACTOR VARIANCE in factoral analysis?

    Hi all, I have been told there is a term to describe the scenario when there is no (significant) common factor variance in a factor analysis...

    Started by ShoeBee‎, 02-12-2014 11:54 AM
    factor analysis, terms
    • Replies: 0
    • Views: 857
    02-12-2014, 11:54 AM Go to last post
  48. What can I do with this data?

    Hi, I want to assess the impact of an intervention on social climate on an inpatient ward. I have the mean scores on a questionnaire across a...

    Started by Gpsych‎, 02-12-2014 05:14 AM
    • Replies: 0
    • Views: 783
    02-12-2014, 05:14 AM Go to last post
  49. "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: 1,399
    02-09-2014, 05:25 AM Go to last post
  50. Mixed ANOVA difficulty ! HELP NEEDED

    Hello... im relatively new to psychology statistics and struggling to understand some things. My experiment is a 2 (common vs distinct faces )x 2...

    Started by retroandbeyond‎, 02-08-2014 05:35 PM
    anova, interaction, psychology, statistics
    • Replies: 0
    • Views: 988
    02-08-2014, 05:35 PM Go to last post
  51. Paired T-test effect size

    Can someone please direct me to a calculation for an effect size for a paired samples t-test along with a reference? Thanks in advance.

    Started by mbetennis01‎, 02-07-2014 09:58 AM
    effect size, paired samples t-test
    • Replies: 6
    • Views: 2,635
    02-07-2014, 05:17 PM Go to last post
  52. Implications of low standard deviation for a moderator

    Hello I have a model where Y = b0 +b1*X+ b2*Z +b3*XZ. Z is a moderator in my theory. In my data, Z is measured on a 5 point Likert type scale with...

    Started by rsg‎, 02-07-2014 05:12 PM
    interaction effects, low variance in moderator, moderation
    • Replies: 0
    • Views: 1,002
    02-07-2014, 05:12 PM Go to last post
  53. questinnaire help for a noob :)

    i am a statsitics newbie and have to do a questionnaire research on pain in children. it's a simple questionnaire with 12 questions, and the...

    Started by ivn‎, 02-07-2014 07:54 AM
    • Replies: 1
    • Views: 911
    02-07-2014, 01:45 PM Go to last post
  54. Simultaneous regressions (?)

    Hi, I wonder whether some of you may have some modelling suggestions. I have a dyadic dataset. For example, the DV could be "I like the other...

    Started by lbv‎, 02-06-2014 04:06 AM
    • Replies: 2
    • Views: 1,227
    02-07-2014, 03:32 AM Go to last post
  55. How to enter ordinal data into SPSS?

    Hi I just wanted to know if there is supposed to be a different way to enter ordinal data, I have never done this before!

    Started by Preeti21‎, 04-12-2011 11:46 PM
    • Replies: 12
    • Views: 15,032
    02-06-2014, 10:31 PM Go to last post
  56. Is 3x2 Factorial ANOVA the right test for this situation??

    I'm helping a friend do some research in public schools. He is trying to determine if the achievement growth of 6th graders in K-8 schools is...

    Started by aballard‎, 02-04-2014 09:04 PM
    • Replies: 6
    • Views: 2,652
    02-05-2014, 01:01 PM Go to last post
  57. HELP PLEASE - TEST (and general) CONFUSION

    Hi, coudl someone please advise me on which test I should be using for the following - I'm assessing the affect of a new ward timetable on...

    Started by Gpsych‎, 02-05-2014 09:19 AM
    • Replies: 3
    • Views: 965
    02-05-2014, 11:56 AM Go to last post
  58. Comparing binary response rates from unequally-sized populations

    Hi all, I would greatly appreciate some help with a behavioural economics experiment I am running. It is a within-subjects design with 3...

    Started by ShrewsMile‎, 02-04-2014 09:10 AM
    • Replies: 0
    • Views: 1,011
    02-04-2014, 09:10 AM Go to last post
  59. Wanted: Psychology genius who can help me figure out an experimental design

    Hi everyone, Thanks for popping in to help! I have a study idea but i'm getting into a little bit of a muddle with the most important part..the...

    Started by Ant_Thompson‎, 02-02-2014 11:38 AM
    • Replies: 1
    • Views: 985
    02-02-2014, 02:01 PM Go to last post
  60. How to report pairewise comparisons in your article?

    I found a main effect with some significant differences between my variables (i.e. as seen in the pairewise comparisons with Bonferroni correction)....

    Started by Jeroen‎, 01-29-2014 09:43 AM
    • Replies: 0
    • Views: 808
    01-29-2014, 09:43 AM Go to last post

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