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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: 28,791
    11-10-2005, 12:21 AM Go to last post
  1. Smile Multiple IVs and DVs- which test should be used?

    Hey guys! I've been provided with a data set and asked to do two analyses based on the following study aims: 1. Look at associations between the...

    Started by psychstudent17‎, 04-12-2017 03:04 AM
    • Replies: 1
    • Views: 440
    04-12-2017, 08:25 AM Go to last post
  2. Determining sample size from confidence interval and significance level

    Hi everyone, I am studying a university level stats course at the moment and I have been given some excerises to take home that I am struggling...

    Started by sophies27‎, 04-08-2017 03:11 PM
    sample size, sample size calculation, sample size determination
    • Replies: 1
    • Views: 494
    04-09-2017, 04:31 PM Go to last post
  3. Determining If Difference Score Was Obtained By Chance

    For example lets say a counselor has been using a depression test on clients at the start of treatment and again 6 months later. When the counselor...

    Started by Stats Mang‎, 04-07-2017 11:31 AM
    alpha, difference scores, z score
    • Replies: 2
    • Views: 598
    04-07-2017, 08:36 PM Go to last post
  4. Manova?

    Hi, I am doing data analisis for my research and I kinda got stuck with it, I have seached alot and I am getting inconsistent informations if it...

    Started by Karobed‎, 04-06-2017 08:44 AM
    manova
    • Replies: 0
    • Views: 294
    04-06-2017, 08:44 AM Go to last post
  5. SEM Mediation using bootstrapping approach

    Hi, I am performing mediation analysis using structural equation modelling (I'm using the lavaan package in 'R'). I am using the bootstrapping...

    Started by EmmaL‎, 04-03-2017 01:20 PM
    bootstrapping, indirect effects, mediation, structural equation model
    • Replies: 4
    • Views: 761
    04-05-2017, 08:53 AM Go to last post
  6. POSAC - maximum possible amount of variable and how to deal with it

    Question about Partial Order Scalogram Analysis by Coordinates (POSAC) - solved right after I posted this thread. Got paper by S. Shye how to deal...

    Started by Liliana‎, 04-05-2017 06:20 AM
    • Replies: 1
    • Views: 458
    04-05-2017, 06:30 AM Go to last post
  7. Family Relationship version of Factor analysis for Japanese Groups

    I am trying to create a scale to measure "comportment" (bodily manners, gyougi) among Japanese and I am doing an exploratory factor analysis...

    Started by timtak‎, 04-03-2017 11:58 PM
    • Replies: 0
    • Views: 550
    04-03-2017, 11:58 PM Go to last post
  8. Lack of homogeneity of Variance in two-way ANOVA

    Hi, I am currently analyzing my data in SPSS. Since I am testing the effect of two independent variables on a dependent one, I was planning on...

    Started by Klaro26‎, 03-29-2017 07:56 AM
    homogeneity, levene's, significance, spss anova
    • Replies: 4
    • Views: 996
    04-02-2017, 12:03 AM Go to last post
  9. Signal detection theory - d' and C - unexpected results

    Hi I've conducted a 2-alternative forced-choice experiment whereby participants were shown images, and then in the test phase had to choose which...

    Started by iwsmuir105‎, 03-30-2017 12:51 PM
    • Replies: 1
    • Views: 573
    04-01-2017, 11:34 PM Go to last post
  10. Correction for attenuation: WAIS-IV and test X

    Hi, I have been asked to do a correction for attenuation of the context between a specific test (Lets call it test X) and a specific part-test of...

    Started by UnnieE‎, 03-30-2017 09:48 AM
    attenuation, reliability, wais-iv
    • Replies: 7
    • Views: 1,036
    03-30-2017, 03:08 PM Go to last post
  11. Interpreting my data (bias?)

    Hello everyone! I had participants learn items from a list and afterwards do a recognition test on them. (EXPERIMENTAL GROUP) the same...

    Started by laraa‎, 03-24-2017 11:47 AM
    • Replies: 0
    • Views: 976
    03-24-2017, 11:47 AM Go to last post
  12. 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, 03-23-2017 07:28 AM
    • Replies: 4
    • Views: 903
    03-23-2017, 10:02 PM Go to last post
  13. 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, 03-23-2017 10:56 AM
    • Replies: 3
    • Views: 862
    03-23-2017, 12:43 PM Go to last post
  14. Need help in Polynomial Regression : constant value and control variables

    Solved. Please remove thank you : )

    Started by angelove114‎, 03-22-2017 11:50 PM
    • Replies: 0
    • Views: 544
    03-22-2017, 11:50 PM Go to last post
  15. 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, 03-22-2017 06:03 AM
    • Replies: 3
    • Views: 693
    03-22-2017, 10:45 PM Go to last post
  16. 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, 03-22-2017 10:40 PM
    • Replies: 0
    • Views: 620
    03-22-2017, 10:40 PM Go to last post
  17. 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, 03-22-2017 04:02 PM
    follow-up, manova, two-way
    • Replies: 0
    • Views: 455
    03-22-2017, 04:02 PM Go to last post
  18. 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: 579
    03-22-2017, 06:04 AM Go to last post
  19. 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: 984
    03-22-2017, 04:22 AM Go to last post
  20. 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: 1,253
    03-19-2017, 05:19 PM Go to last post
  21. 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: 530
    03-19-2017, 09:47 AM Go to last post
  22. 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: 429
    03-17-2017, 01:25 PM Go to last post
  23. 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: 342
    03-17-2017, 12:11 PM Go to last post
  24. 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: 705
    03-16-2017, 03:52 PM Go to last post
  25. 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: 589
    03-14-2017, 09:03 PM Go to last post
  26. 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 12:24 PM
    factor analysis, hierarchical method, principal component
    • Replies: 1
    • Views: 969
    03-13-2017, 08:56 AM Go to last post
  27. 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 10:36 AM
    ancova, anova, covariate
    • Replies: 1
    • Views: 571
    03-13-2017, 08:53 AM Go to last post
  28. 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 05:18 PM
    • Replies: 3
    • Views: 951
    03-13-2017, 08:52 AM Go to last post
  29. 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: 663
    03-13-2017, 08:49 AM Go to last post
  30. 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 03:42 PM
    • Replies: 0
    • Views: 605
    03-10-2017, 03:42 PM Go to last post
  31. 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 02:29 PM
    2 Pages
    1 2
    • Replies: 16
    • Views: 3,395
    03-09-2017, 12:18 PM Go to last post
  32. 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 04:44 AM
    • Replies: 0
    • Views: 751
    03-08-2017, 04:44 AM Go to last post
  33. 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 11:10 AM
    • Replies: 6
    • Views: 1,274
    03-07-2017, 05:37 AM Go to last post
  34. 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 09:45 AM
    anova, ordinal, psychology, regression analysis
    • Replies: 11
    • Views: 1,212
    03-06-2017, 12:40 PM Go to last post
  35. 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 05:32 AM
    cronbach's alpha, outliers, reliability
    • Replies: 14
    • Views: 2,034
    03-03-2017, 02:16 AM Go to last post
  36. 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 09:33 PM
    • Replies: 0
    • Views: 959
    03-02-2017, 09:33 PM Go to last post
  37. 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 07:51 PM
    2 Pages
    1 2
    • Replies: 26
    • Views: 2,861
    02-25-2017, 04:40 PM Go to last post
  38. 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 06:28 AM
    • Replies: 10
    • Views: 1,284
    02-23-2017, 11:29 PM Go to last post
  39. 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 07:30 AM
    likert scale, manova, negative wording, recode, reversed items
    • Replies: 0
    • Views: 916
    02-23-2017, 07:30 AM Go to last post
  40. 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 12:52 PM
    • Replies: 0
    • Views: 763
    02-22-2017, 12:52 PM Go to last post
  41. 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, 02-16-2017 12:21 AM
    • Replies: 2
    • Views: 1,178
    02-16-2017, 08:56 AM Go to last post
  42. 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 01:24 PM
    • Replies: 1
    • Views: 1,012
    02-14-2017, 01:26 PM Go to last post
  43. 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 09:27 AM
    • Replies: 0
    • Views: 991
    02-09-2017, 09:27 AM Go to last post
  44. 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 04:23 PM
    correlation
    • Replies: 7
    • Views: 1,516
    02-07-2017, 11:28 PM Go to last post
  45. 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 04:24 PM
    • Replies: 3
    • Views: 1,145
    02-06-2017, 09:26 PM Go to last post
  46. 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 10:54 AM
    • Replies: 2
    • Views: 1,277
    02-06-2017, 12:34 PM Go to last post
  47. 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 09:13 AM
    effect size, one way anova, power calculation, sample size calculation, sample size determination
    • Replies: 0
    • Views: 1,681
    01-26-2017, 09:13 AM Go to last post
  48. 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 02:27 AM
    • Replies: 1
    • Views: 1,545
    01-25-2017, 05:38 PM Go to last post
  49. 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 02:59 PM
    • Replies: 4
    • Views: 2,158
    01-25-2017, 02:18 AM Go to last post
  50. 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 12:01 PM
    intervention, likert-type scale, repeated measures, within-subjects
    • Replies: 1
    • Views: 1,958
    01-19-2017, 08:35 AM Go to last post
  51. 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: 1,577
    01-18-2017, 02:51 AM Go to last post
  52. 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 11:02 AM
    anova, nominal data analysis, repeated measures anova, within subjects
    • Replies: 1
    • Views: 1,949
    01-16-2017, 12:36 PM Go to last post
  53. 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 03:02 AM
    • Replies: 3
    • Views: 2,204
    01-13-2017, 12:32 PM Go to last post
  54. 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 08:20 AM
    anova, interaction, interaction effects, two factor anova, two factors
    • Replies: 5
    • Views: 1,766
    01-12-2017, 03:45 AM Go to last post
  55. [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 02:34 PM
    anova, theory of mind
    • Replies: 1
    • Views: 1,993
    01-09-2017, 03:41 AM Go to last post
  56. 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 05:35 AM
    • Replies: 0
    • Views: 1,751
    01-05-2017, 05:35 AM Go to last post
  57. 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 11:40 AM
    • Replies: 2
    • Views: 1,587
    01-04-2017, 02:10 PM Go to last post
  58. 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 03:28 AM
    • Replies: 0
    • Views: 1,515
    01-02-2017, 03:28 AM Go to last post
  59. 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 08:33 AM
    • Replies: 0
    • Views: 1,429
    01-01-2017, 08:33 AM Go to last post
  60. 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 11:14 AM
    • Replies: 4
    • Views: 2,471
    12-31-2016, 01:58 PM Go to last post

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