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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, 11-09-2005 11:21 PM
    • Replies: 0
    • Views: 22,541
    11-09-2005, 11:21 PM Go to last post
  1. Correct way of reporting Chi square with IV 4 levels results

    Sorry, if the question is silly. Cannot find anywhere what will be a correct way of reporting Chi Square results for the case when IV has 4 levels (4...

    Started by Liliana‎, Today 07:28 AM
    • Replies: 2
    • Views: 75
    Today, 04:04 PM Go to last post
  2. Signal Detection Theory - Calculating d'

    Hi there. I'm currently doing the analysis for my undergraduate study, and I'm wondering if someone could help me with Signal Detection Theory,...

    Started by iwsmuir105‎, Today 10:56 AM
    • Replies: 3
    • Views: 92
    Today, 12:43 PM Go to last post
  3. Need help in Polynomial Regression : constant value and control variables

    Dear all, I am running my data using Polynomial Regression. The variables are all measured on 6-point Likert-type scales. I run Polynomial...

    Started by angelove114‎, Yesterday 11:50 PM
    • Replies: 0
    • Views: 59
    Yesterday, 11:50 PM Go to last post
  4. Which post-hoc test for a One way repeated measures ANOVA

    Can I use a Tukey test to test all pairwise comparisons for a repeated measures design? :) THANKS

    Started by rachel_joke‎, Yesterday 06:03 AM
    • Replies: 3
    • Views: 127
    Yesterday, 10:45 PM Go to last post
  5. How to organize Multilevel Model in R

    Hello, I am currently running an experiment where we measure escape latency and seeing if the presence of a drug has an effect on this. Each rat...

    Started by atamalu‎, Yesterday 10:40 PM
    • Replies: 0
    • Views: 52
    Yesterday, 10:40 PM Go to last post
  6. Two-way MANOVA

    Hi, how do I fully follow up this MANOVA, please??? 2 IVs: Exposure Therapy (2 levels: control, or virtual reality) and Medication (2 levels:...

    Started by Quickquez‎, Yesterday 04:02 PM
    follow-up, manova, two-way
    • Replies: 0
    • Views: 58
    Yesterday, 04:02 PM Go to last post
  7. Which ANOVA to use

    I have 20 subjects who are all presented with 12 pictures. These 12 pictures are split into 4 categories: Big Inanimate, Big Animate, Small...

    Started by rachel_joke‎, 03-21-2017 01:29 PM
    • Replies: 2
    • Views: 115
    Yesterday, 06:04 AM Go to last post
  8. Help finding a term used in validity - psychometric testing

    A colleague has asked me for help with the name of a recognised situation whereby truncated information (e.g. a short questionnaire) is used to...

    Started by VBee‎, 03-15-2017 10:04 AM
    • Replies: 10
    • Views: 382
    Yesterday, 04:22 AM Go to last post
  9. Likert scale data -can I use paired t-test? What about normality testing?

    Hey all! I have read many contradicting manuals and advice, so I decided to ask the best experts –you guys :) I have data from 40 subjects. I...

    Started by Labestia‎, 03-16-2017 01:10 PM
    likert, likert scale, normality, t test
    • Replies: 6
    • Views: 299
    03-19-2017, 05:19 PM Go to last post
  10. Interaction follow-ups

    Hi! I have ran a 2x2x2 ANOVA (B-W-W). There was no 3-way interaction, but there was a 2-way interaction for my 2 within-subjects factors. I'm a...

    Started by fffrost‎, 03-19-2017 09:47 AM
    • Replies: 0
    • Views: 108
    03-19-2017, 09:47 AM Go to last post
  11. MANCOVA MANOVA_assumptions_ heterogeneity of regression slopes

    Hallo there :wave:, I am examining the difference in illness models (by asking several questions: DV) for refugees and non-refugees (IV) (both n=...

    Started by K_T‎, 03-17-2017 01:25 PM
    assumptions, heterogeneity, mancova, manova, regression slopes
    • Replies: 0
    • Views: 83
    03-17-2017, 01:25 PM Go to last post
  12. Smile MANCOVA MANOVA_assumptions_ heterogeneity of regression slopes

    Hallo there :wave:, I am examining the difference in illness models (by asking several Likert scale type questions: DV) for refugees (n=100) and...

    Started by K_T‎, 03-17-2017 12:11 PM
    assumptions, heterogeneity, mancova, manova, regression slopes
    • Replies: 0
    • Views: 25
    03-17-2017, 12:11 PM Go to last post
  13. What are the limitations to feeling thermometers?

    Hi there, I received the following comment from a reviewer and am a bit stuck on how I should answer: The comment is referring to our use...

    Started by jm2209‎, 03-16-2017 03:18 PM
    • Replies: 2
    • Views: 128
    03-16-2017, 03:52 PM Go to last post
  14. Green's scaling analysis of 3 items

    I'm doing a study on helping behaviour in toddlers, trying to see if the three forms of helping I've measured are scalable. I'm using Green's...

    Started by JessR‎, 03-14-2017 09:03 PM
    • Replies: 0
    • Views: 109
    03-14-2017, 09:03 PM Go to last post
  15. Does it make sense to conduct a Hierarchical Principal Compomnent Analysis (PCA)?

    So I have twelve variables that theoretically belong to the same dimension and I want do reduce them to one single item. A hierarchical factor...

    Started by favoone‎, 03-07-2017 11:24 AM
    factor analysis, hierarchical method, principal component
    • Replies: 1
    • Views: 269
    03-13-2017, 08:56 AM Go to last post
  16. Which test to use?

    I have to analyze a within-subject experiment with a continuous dependent variable and a categorical dependent variable (brain stimulation: Anode,...

    Started by mathieu‎, 03-10-2017 09:36 AM
    ancova, anova, covariate
    • Replies: 1
    • Views: 164
    03-13-2017, 08:53 AM Go to last post
  17. Assumptions of Bonferroni correction

    Hi everyone, I recently learned that the Bonferroni correction assumes that all of the hypothesis tests we're conducting on the same data are...

    Started by myautumn28‎, 03-10-2017 04:18 PM
    • Replies: 3
    • Views: 244
    03-13-2017, 08:52 AM Go to last post
  18. how to calculate ICC for sample of 10 with two assessor

    i have two assessors rating on picture cue . SME rateds each stories respective to picture in TAT like test with rating on likert 5 point scale from...

    Started by Dr.A.Suresh‎, 03-13-2017 02:22 AM
    icc for sample (n=10)
    • Replies: 1
    • Views: 126
    03-13-2017, 08:49 AM Go to last post
  19. Simple Mediation Model - output using Mplus

    Hi, Can someone help me interpret my output from Mplus 7 please? The model is simple i.v = x1a mediator = M dv = Y1 I have attached the...

    Started by laula‎, 03-10-2017 02:42 PM
    • Replies: 0
    • Views: 128
    03-10-2017, 02:42 PM Go to last post
  20. Statistical analysis

    Hi there I'm a student doing a dissertation about the influence of reward satisfaction on turnover intention. At the moment I'm wondering how to...

    Started by Hypnoz‎, 02-05-2017 01:29 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 1,226
    03-09-2017, 11:18 AM Go to last post
  21. Cohen's Kappa on Categorical Data in R - Gestural Repertoires

    Hi There, First time user here. I am a Master's student of Primatology, I wasn't sure Psychology Stats was the way to go but it seems to fit...

    Started by KayBaby555‎, 03-08-2017 03:44 AM
    • Replies: 0
    • Views: 179
    03-08-2017, 03:44 AM Go to last post
  22. How should I analyse this data?

    Hello! I've been banging my head against the wall trying to work out the best way of looking at this data. I think I'm missing something simple,...

    Started by Sin_Nie‎, 02-21-2017 10:10 AM
    • Replies: 6
    • Views: 458
    03-07-2017, 04:37 AM Go to last post
  23. Smile Which inferential stats test to use? PLEASE HELP

    Hello all, Someone please help. I'm conducting a study on how group gender ratios influences stereotype threat within career choices and level of...

    Started by ashleymichelle‎, 03-02-2017 08:45 AM
    anova, ordinal, psychology, regression analysis
    • Replies: 11
    • Views: 381
    03-06-2017, 11:40 AM Go to last post
  24. Quick Cronbach's Alpha Question

    Hi all, This may seem like a silly question, but I was wondering if I should remove outliers prior to running reliability analysis or run the...

    Started by Aegislash‎, 02-27-2017 04:32 AM
    cronbach's alpha, outliers, reliability
    • Replies: 14
    • Views: 659
    03-03-2017, 01:16 AM Go to last post
  25. pre post design - analysis help

    Hi everyone, I'm analyzing some data for a research project and need some help selecting the appropriate test that will answer my questions of...

    Started by xmorphicx‎, 03-02-2017 08:33 PM
    • Replies: 0
    • Views: 203
    03-02-2017, 08:33 PM Go to last post
  26. Help Please

    A local United Way and a group of community agencies in a large urban area have decided that making sure young children are ready to enter the school...

    Started by Ktina‎, 02-27-2017 07:30 PM
    • Replies: 0
    • Views: 286
    02-27-2017, 07:30 PM Go to last post
  27. Which test to run?

    I have been getting conflicting results from a few people on what test to use, so please let me know what you think. The design: We have 3...

    Started by atamalu‎, 02-14-2017 06:51 PM
    2 Pages
    1 2
    • Replies: 26
    • Views: 1,026
    02-25-2017, 03:40 PM Go to last post
  28. Test for assessing if gender, organisation, management level and age have an impact

    Hi, I am looking to carry out a multiple regression analysis to assess the factors that predict participant's post-training scores on the...

    Started by EmmaL‎, 02-19-2017 05:28 AM
    • Replies: 10
    • Views: 481
    02-23-2017, 10:29 PM Go to last post
  29. reversed, inverted items... MANOVA

    Do I necessarily need to recode my inverted (negatively worded) items before running a MANOVA? I am running the MANOVA on all items of a...

    Started by T.H.‎, 02-23-2017 06:30 AM
    likert scale, manova, negative wording, recode, reversed items
    • Replies: 0
    • Views: 199
    02-23-2017, 06:30 AM Go to last post
  30. mixing within trial, and between trial effects?

    Hi I'm hoping someone can suggest to this stats dunce an elegant way to analyse the following data. We make a recording from a neuron and apply a...

    Started by ar123‎, 02-22-2017 11:52 AM
    • Replies: 0
    • Views: 177
    02-22-2017, 11:52 AM Go to last post
  31. Inferential results interpretation? Please help

    two players number of games attended per player. t(66)= -3.09, p < .05 d = .35 What does this mean?

    Started by Deanabrown36‎, 02-15-2017 11:21 PM
    • Replies: 2
    • Views: 304
    02-16-2017, 07:56 AM Go to last post
  32. How to conduct a mixed-model analysis in SPSS?

    Hi! I am trying to conduct the following analysis on human subjects data using SPSS. It is my understanding that it requires mixed modeling, and I...

    Started by genericity‎, 02-07-2017 12:24 PM
    • Replies: 1
    • Views: 397
    02-14-2017, 12:26 PM Go to last post
  33. Inter rater agreement - Mezzich's Kappa

    Dear all, I want to assess the quality of the categorization handbook and the accordance between multiple raters who have categorized articles...

    Started by AnnaCop‎, 02-09-2017 08:27 AM
    • Replies: 0
    • Views: 352
    02-09-2017, 08:27 AM Go to last post
  34. general correlation question

    hello! if variable A is correlated to var B (.37) and var B is correlated to var C (.32), can we infer the correlation between var A and var C?...

    Started by mdc333‎, 02-07-2017 03:23 PM
    correlation
    • Replies: 7
    • Views: 487
    02-07-2017, 10:28 PM Go to last post
  35. Unhappy Statistical analysis, where to start with 2600 participants?

    1. purpose of the study / research question / hypotheses, if possible, provide some background or context for us. I'm looking at the dark triad...

    Started by triad‎, 02-06-2017 03:24 PM
    • Replies: 3
    • Views: 413
    02-06-2017, 08:26 PM Go to last post
  36. Very Quick Mediation question

    I want to know if the direct effect of X on Y is significant, whether it is still possible for X to be mediated through M? Thanks a million

    Started by pr15371‎, 02-05-2017 09:54 AM
    • Replies: 2
    • Views: 368
    02-06-2017, 11:34 AM Go to last post
  37. Sample size calculation for a one way anova (three conditions)??

    Hi there, I am designing a study that compares three conditions (differences in glass shape) on one main DV (drinking rate) (as well as some...

    Started by tirl2‎, 01-26-2017 08:13 AM
    effect size, one way anova, power calculation, sample size calculation, sample size determination
    • Replies: 0
    • Views: 641
    01-26-2017, 08:13 AM Go to last post
  38. Raykov's rho

    In relation to Raykov's rho, this might be a naive question but, is appropriate to report it as a consistency index in a multifactorial solution? I...

    Started by ernesthor‎, 01-18-2017 01:27 AM
    • Replies: 1
    • Views: 417
    01-25-2017, 04:38 PM Go to last post
  39. Help responding to a journal reviewer on reliability of scale

    Hey all, My team has been working on a paper that looks at the psychometric properties of an 8-item scale. This scale has items that we pulled...

    Started by jdark7‎, 01-21-2017 01:59 PM
    • Replies: 4
    • Views: 601
    01-25-2017, 01:18 AM Go to last post
  40. Repeated measures analysis with ordinal data

    Hello, I have data on subjects' ratings of 5 potential side effects (rated as: none, mild, moderate, considerable, strong) following three...

    Started by Siobh‎, 01-14-2017 11:01 AM
    intervention, likert-type scale, repeated measures, within-subjects
    • Replies: 1
    • Views: 596
    01-19-2017, 07:35 AM Go to last post
  41. Construction und reliability of scales

    Hello, I'm checking a moderated mediation with two mediators (altruism & egoism). I've constructed two scales (altruismus with 8 items and egoism...

    Started by yologer‎, 08-07-2016 06:06 AM
    • Replies: 1
    • Views: 674
    01-18-2017, 01:51 AM Go to last post
  42. Repeated Measures Anova question

    Thanks so much for taking a minute to read this! I am planning a dissertation and IF could get some feedback as to if I am on the right track,...

    Started by sr1226‎, 01-14-2017 10:02 AM
    anova, nominal data analysis, repeated measures anova, within subjects
    • Replies: 1
    • Views: 524
    01-16-2017, 11:36 AM Go to last post
  43. Exploratory factor analysis with forced number of factors?

    Dear colleagues, SPSS has an option for exploratory factor analysis where you can choose the number of factors before performing the analysis. In...

    Started by Anthony_1000‎, 01-11-2017 02:02 AM
    • Replies: 3
    • Views: 520
    01-13-2017, 11:32 AM Go to last post
  44. Compare differences between exp. and contr. of two groups

    Hi! I already used lots of search engines without finding an answer to my problem. I am testing two methods for manipulating religious belief....

    Started by rothmann1510‎, 01-10-2017 07:20 AM
    anova, interaction, interaction effects, two factor anova, two factors
    • Replies: 5
    • Views: 555
    01-12-2017, 02:45 AM Go to last post
  45. [SPSS-ANOVA] Should I use a mixed ANOVA design?

    Good evening I am writing to inquire how I should tackle the data for my dissertation research paper. I have two main problems that I will point...

    Started by AnaC‎, 01-08-2017 01:34 PM
    anova, theory of mind
    • Replies: 1
    • Views: 490
    01-09-2017, 02:41 AM Go to last post
  46. Interactions in count data

    Hi all, I've run a multi-tasking behavioural paradigm with volunteers grouped according to 2 characteristics 1) Age (young, mid) 2) Risk (high,...

    Started by Lancaster‎, 01-05-2017 04:35 AM
    • Replies: 0
    • Views: 505
    01-05-2017, 04:35 AM Go to last post
  47. Statistical analysis

    Hi all. I am doing an experiment that looking at relationships between mental imagery and mental disorders, mental disorders and self-regulation...

    Started by Armaghgeddon‎, 01-04-2017 10:40 AM
    • Replies: 2
    • Views: 516
    01-04-2017, 01:10 PM Go to last post
  48. Exploratory factor analysis on grades

    Hi! I'm doing an analysis on a set of 90 test results in 7 different tasks (90 students were given a set of 7 tasks). The results were not given...

    Started by Danrob‎, 01-02-2017 02:28 AM
    • Replies: 0
    • Views: 497
    01-02-2017, 02:28 AM Go to last post
  49. Second language acquisition data analysis

    Hi there, I am writing a research paper about second language acquisition and I would like to confirm my data analysis approach since I am not an...

    Started by bgarcia‎, 01-01-2017 07:33 AM
    • Replies: 0
    • Views: 460
    01-01-2017, 07:33 AM Go to last post
  50. Factor analysis on dichotomously scored items

    Hi have a set of 30 dichotomously scored items (scored 0 and 1) and want to do exploratory factor analysis on them. I have heard that performing EFA...

    Started by Anthony_1000‎, 12-29-2016 10:14 AM
    • Replies: 4
    • Views: 639
    12-31-2016, 12:58 PM Go to last post
  51. Calculating and Reporting Effect Size for Fisher's Exact Test?

    Hi everyone, I am writing a paper for publication. This is my first time doing a survey study, and also my first time working with categorical...

    Started by nporot‎, 12-28-2016 12:42 PM
    effect size, fisher's exact test, odds ratios, phi
    • Replies: 2
    • Views: 760
    12-30-2016, 10:35 AM Go to last post
  52. Does this study design look okay? Thanks :)

    I want to look at: If a school-based CBT intervention has an impact on young people's levels of anxiety and/or depression. I have questionnaires...

    Started by cmms‎, 12-28-2016 05:15 PM
    • Replies: 3
    • Views: 617
    12-29-2016, 05:04 PM Go to last post
  53. Nested within-subjects repeated measures stats?

    Hi people, I am having some confusion over how to carry out the stats for my experiment. In the experiment, there is two condition of teaching...

    Started by sgjustino‎, 12-19-2016 08:41 AM
    linear mixed model, nested, repeated measure, within subject
    • Replies: 2
    • Views: 781
    12-26-2016, 09:13 AM Go to last post
  54. Sample size

    Dear colleagues, I have a question that has become a bone of contention among my colleagues. Id be very grateful if you commented. What are...

    Started by Anthony_1000‎, 12-26-2016 08:28 AM
    • Replies: 0
    • Views: 527
    12-26-2016, 08:28 AM Go to last post
  55. Choosing the right statistical procedure - GLM repeated measure?

    Hello, I would appreciate any help to determine the right statistical method to analyze the next research question. The research population is...

    Started by Netti‎, 12-23-2016 03:11 PM
    glm repeated measure
    • Replies: 2
    • Views: 701
    12-24-2016, 08:26 PM Go to last post
  56. Query about study design

    Dear All, I am currently working on designing a research project for my postgraduate psychology qualification and I am not quite sure if I am on the...

    Started by zammitr‎, 12-23-2016 06:32 AM
    • Replies: 0
    • Views: 494
    12-23-2016, 06:32 AM Go to last post
  57. Which method shall I use?

    Hello, I am working on my first paper and I feel quite lost with the statistical method. Hope you can help me! I am comparing two samples from...

    Started by AJLRB‎, 12-08-2016 02:43 AM
    contingecy table
    • Replies: 4
    • Views: 984
    12-12-2016, 09:04 AM Go to last post
  58. Question Which ANOVA?

    Hi there :) I am struggling to determine which would be the most appropriate ANOVA analysis to use for some work I am doing. I have 3...

    Started by roseberry‎, 12-10-2016 06:39 AM
    anova, contrasts, independent groups, one way anova, spss anova
    • Replies: 1
    • Views: 657
    12-10-2016, 05:00 PM Go to last post
  59. Dissertation Trouble Using Correlations

    Hello. I am having a problem with my dissertation and I was wondering if anyone is kind enough to help me out. I am running a within-subjects...

    Started by mulhaq‎, 12-08-2016 04:39 AM
    correlations, linear effects, normal distributions, psychology experiment, reliability
    • Replies: 1
    • Views: 519
    12-08-2016, 06:21 AM Go to last post
  60. Correlation & Regression

    I have used regression to explain a dependent variable with a number of independent variables. The finding is that the variables with highest betas...

    Started by Anthony_1000‎, 12-03-2016 02:29 AM
    • Replies: 5
    • Views: 834
    12-07-2016, 02:53 AM Go to last post

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