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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: 31,424
    11-10-2005, 12:21 AM Go to last post
  1. 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: 1,329
    02-14-2017, 01:26 PM Go to last post
  2. 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: 1,646
    02-09-2017, 09:27 AM Go to last post
  3. 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: 2,799
    02-07-2017, 11:28 PM Go to last post
  4. 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: 1,610
    02-06-2017, 09:26 PM Go to last post
  5. 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: 1,733
    02-06-2017, 12:34 PM Go to last post
  6. 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: 2,176
    01-26-2017, 09:13 AM Go to last post
  7. 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: 2,363
    01-25-2017, 05:38 PM Go to last post
  8. 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: 2,801
    01-25-2017, 02:18 AM Go to last post
  9. 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: 2,581
    01-19-2017, 08:35 AM Go to last post
  10. 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: 2,036
    01-18-2017, 02:51 AM Go to last post
  11. 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: 2,547
    01-16-2017, 12:36 PM Go to last post
  12. 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: 2,924
    01-13-2017, 12:32 PM Go to last post
  13. 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: 2,394
    01-12-2017, 03:45 AM Go to last post
  14. [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: 2,471
    01-09-2017, 03:41 AM Go to last post
  15. 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: 2,443
    01-05-2017, 05:35 AM Go to last post
  16. 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: 2,090
    01-04-2017, 02:10 PM Go to last post
  17. 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: 1,978
    01-02-2017, 03:28 AM Go to last post
  18. 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: 2,091
    01-01-2017, 08:33 AM Go to last post
  19. 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: 3,365
    12-31-2016, 01:58 PM Go to last post
  20. 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 01:42 PM
    effect size, fisher's exact test, odds ratios, phi
    • Replies: 2
    • Views: 4,457
    12-30-2016, 11:35 AM Go to last post
  21. 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 06:15 PM
    • Replies: 3
    • Views: 2,995
    12-29-2016, 06:04 PM Go to last post
  22. 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 09:41 AM
    linear mixed model, nested, repeated measure, within subject
    • Replies: 2
    • Views: 3,111
    12-26-2016, 10:13 AM Go to last post
  23. 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 09:28 AM
    • Replies: 0
    • Views: 2,161
    12-26-2016, 09:28 AM Go to last post
  24. 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 04:11 PM
    glm repeated measure
    • Replies: 2
    • Views: 3,102
    12-24-2016, 09:26 PM Go to last post
  25. 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 07:32 AM
    • Replies: 0
    • Views: 2,186
    12-23-2016, 07:32 AM Go to last post
  26. 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 03:43 AM
    contingecy table
    • Replies: 4
    • Views: 3,059
    12-12-2016, 10:04 AM Go to last post
  27. 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 07:39 AM
    anova, contrasts, independent groups, one way anova, spss anova
    • Replies: 1
    • Views: 2,652
    12-10-2016, 06:00 PM Go to last post
  28. 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 05:39 AM
    correlations, linear effects, normal distributions, psychology experiment, reliability
    • Replies: 1
    • Views: 2,850
    12-08-2016, 07:21 AM Go to last post
  29. 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 03:29 AM
    • Replies: 5
    • Views: 3,893
    12-07-2016, 03:53 AM Go to last post
  30. Nonparametric equivalent to a factorial ANOVA?

    Hi, Does anyone know of a nonparametric equivalent to a factorial ANOVA? I can't run a parametric test because I have violations of normality of...

    Started by coffee123‎, 09-20-2016 11:03 PM
    • Replies: 12
    • Views: 4,139
    12-07-2016, 03:38 AM Go to last post
  31. Smile moderated mediation

    Hi everyone, I am currently analysing a moderated mediation model. The long and short of it is that the analyses showed that the overall moderated...

    Started by timneill‎, 03-26-2014 10:46 PM
    • Replies: 10
    • Views: 9,528
    12-07-2016, 03:29 AM Go to last post
  32. Hypothesis Testing and Pearson's Homework Help PLS

    I have 2 questions I need help with: 1.You own the company that makes the cheap store brand wine for Walmart (Chateau Trailerparc). You think most...

    Started by portcity‎, 12-04-2016 02:42 PM
    • Replies: 0
    • Views: 2,422
    12-04-2016, 02:42 PM Go to last post
  33. Outliers in categorical data?

    Hello! I am working on a pre-analysis plan and have to specify what I am going to do with outliers. I have two categorical variables (5 levels and...

    Started by cynnetje‎, 12-02-2016 05:45 PM
    boxplot, categorical, chi-square, outlier
    • Replies: 2
    • Views: 3,187
    12-02-2016, 06:41 PM Go to last post
  34. How to include hanging control in ANOVA analysis on SPSS

    Hi all, I'm hoping to get some advice on how to run ANOVAs in SPSS for a design that includes a hanging control group. I'm interested in how...

    Started by tantsevat‎, 04-13-2015 12:45 PM
    3 x 3 + 1, anova, hanging control, spss
    • Replies: 2
    • Views: 3,958
    11-30-2016, 10:53 AM Go to last post
  35. 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: 2,592
    11-29-2016, 02:58 PM Go to last post
  36. Which analysis to choose? Urgent

    Hi, any help is greatly appreciated. I have data from the same children at ages 4, 7 and 11 for a variable (self-regulation) created from a...

    Started by TruroJP‎, 11-27-2016 05:31 PM
    analysis help, anova, compare 2 means, longitudinal analysis, stata 14
    • Replies: 5
    • Views: 3,152
    11-27-2016, 09:44 PM Go to last post
  37. effect size calculations for longitudinal mixed effects models

    I have been working with a financial database and recently got comments from a reviewer on my manuscript. The comments stemmed from how I calculated...

    Started by the42up‎, 11-25-2016 01:07 PM
    • Replies: 0
    • Views: 2,550
    11-25-2016, 01:07 PM Go to last post
  38. How to analyze repeated measures game data with changing difficulty levels?

    Participants: 19 children participated in the study. Children were grouped in groups G1 (N=8) and group G2 (N=11) based on their behaviors. A...

    Started by skirshna‎, 11-23-2016 07:23 PM
    different outcomes, hierarchical, mixed model, repeated ancova, repeated measures design
    • Replies: 2
    • Views: 2,593
    11-23-2016, 10:33 PM Go to last post
  39. Repeated measures when pre/post group is not independent or dependent

    Hello, I am running a pre-post study using several different instruments (e.g. 1-5 Likert scale instruments which produce a final score). It is...

    Started by lindsayh1‎, 11-22-2016 11:28 AM
    repeated measure, t-test two-sample
    • Replies: 2
    • Views: 2,625
    11-23-2016, 08:48 AM Go to last post
  40. Limits for missing values in the multiple imputation method

    I have an understanding question and I need help. I have a record with many missing values. I now wanted to use the multipile Imputation method to...

    Started by Syntax6‎, 11-17-2016 10:49 AM
    missing values, multiple imputation, psycology
    • Replies: 6
    • Views: 3,051
    11-19-2016, 07:22 AM Go to last post
  41. IV = 2 levels, DV = rank list from 1-8. Not sure how to explore variability between

    Greetings, Im new to this forum and excited about enhancing my stats skills. Im interested in exploring if there is a difference between two...

    Started by Luxor‎, 11-14-2016 09:38 PM
    • Replies: 0
    • Views: 2,306
    11-14-2016, 09:38 PM Go to last post
  42. Mixed-effects modelling of response data (multiple stimuli&subjects) in Matlab

    I have preference ratings (integers from 1-to-7) for k=80 stimuli, obtained from N=30 subjects. I want to use a mixed-effects model to test how well...

    Started by wildetudor‎, 11-08-2016 06:24 PM
    • Replies: 3
    • Views: 2,958
    11-14-2016, 01:05 PM Go to last post
  43. ?? 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: 2,787
    11-12-2016, 02:32 PM Go to last post
  44. Number of responses above a threshold after considering survey error

    I am interested in how many people in my survey of people earn between $50,000 and $54,999. I construct a paper survey which asks for income in...

    Started by jakeharry‎, 11-10-2016 12:30 PM
    income, survey, threshold, uncertainty
    • Replies: 3
    • Views: 2,383
    11-11-2016, 08:47 AM Go to last post
  45. Repeated Measures with 2 categorical variables and one continuous variable

    Hello TalkStats members, Ok I have searched the web and this site and I feel like I am still lost on my problem. I have six items where...

    Started by tqh‎, 11-07-2016 04:28 PM
    • Replies: 0
    • Views: 2,325
    11-07-2016, 04:28 PM Go to last post
  46. Can someone show me a 2x3 design, with AB interaction & main effect of A and B?

    Can someone show me a 2(A)x3(B) design, with AB interaction & main effect of A and B? In terms of a graph and an explanation of the graph ? My...

    Started by allie_moore‎, 11-02-2016 11:47 PM
    • Replies: 2
    • Views: 2,902
    11-06-2016, 03:13 AM Go to last post
  47. Prediction from predicted/residual values compare to standard error of the estimate

    Hello. I have to indicate how good prediction is, by looking at the actual, predicted, and residual values, compare to the standard error of the...

    Started by yumi‎, 11-03-2016 11:32 PM
    • Replies: 1
    • Views: 2,307
    11-05-2016, 05:53 AM Go to last post
  48. Factor analysis

    Dear all, I have a question concerning a factor analysis run in Stata (principal factor, no rotation), based on 12 variables - my experience with...

    Started by dnh‎, 11-01-2016 06:10 AM
    • Replies: 0
    • Views: 2,444
    11-01-2016, 06:10 AM Go to last post
  49. Repeated ANOVA using comparable starting values?

    Hello, I have a weird problem that I've never encountered before. I'm hoping someone else might provide their insight. I am conducted a study...

    Started by PillBaxton‎, 10-25-2016 10:55 AM
    repe
    • Replies: 1
    • Views: 2,532
    10-27-2016, 02:48 AM Go to last post
  50. Need help: Running a One-way FIXED effects Between Subject, ANOVA in SPSS.

    I am having to run a One-way FIXED effects Between Subject, ANOVA in SPSS, and I am STUCK! :( Anyone care to help? I will explain the best I can...

    Started by allie_moore‎, 10-25-2016 07:36 PM
    • Replies: 1
    • Views: 3,521
    10-26-2016, 06:55 AM Go to last post
  51. Composite reliability vs Cronbach's alpha

    Hello Wondering if someone could clarify I'm developing a new measure with 10 constructs. Each construct has between 4 - 6 items. I've...

    Started by anon2000‎, 09-09-2014 03:02 AM
    2 Pages
    1 2
    composite reliability, cronbach's alpha, questionnaire development, reliability
    • Replies: 21
    • Views: 37,828
    10-24-2016, 04:47 PM Go to last post
  52. Structural Equiation Modeling - Likert variable and fit indices

    Hello everybody! Thank you in advance for reading, and for trying to help! To put it briefly.. I am working with Structural Equiation Modeling...

    Started by SFArtamendi‎, 10-24-2016 10:13 AM
    likert, rmsea, sem
    • Replies: 1
    • Views: 2,731
    10-24-2016, 02:07 PM Go to last post
  53. HELP with data collection methods and data analysis in quantitative research

    I am doing a research proposal on the effect of a drug on haemorrhage growth in traumatic brain injury. what level of data measurement will i use to...

    Started by murrayk‎, 10-21-2016 08:59 PM
    • Replies: 1
    • Views: 2,540
    10-22-2016, 12:49 AM Go to last post
  54. Unhappy Quick one please: Difference between 1-way and 2-way ANOVA - Example provided

    Hello, I apologize in advance if this is too simple for these forums, but I am just wanted to be very sure. Example: A study that looks at 2...

    Started by Sagan_24‎, 09-27-2016 11:59 PM
    factorial anova, one-way anova
    • Replies: 7
    • Views: 3,522
    10-21-2016, 07:06 AM Go to last post
  55. Understanding correlations in order to test speed-accuracy trade-off in experiments

    I understand that in experiments where the measures of interest are speed (reaction time) and accuracy, for an effect to be valid one needs to make...

    Started by Poppy1‎, 10-18-2016 04:33 PM
    accuracy, correlation, reaction time, sat, speed-accuracy trade-off
    • Replies: 3
    • Views: 2,903
    10-20-2016, 05:15 PM Go to last post
  56. Regression for multiple scores obtained from multiple subjects

    Hello, I have preference ratings (1-to-7 scale) for k=80 stimuli, obtained from N=30 subjects. I would like to do a multiple regression for these...

    Started by wildetudor‎, 10-19-2016 07:08 PM
    matlab, multiple regression, regression, repeat measures
    • Replies: 0
    • Views: 2,146
    10-19-2016, 07:08 PM Go to last post
  57. Can someone give example of, 2-way randomized fixed factor Anova (between subjects)

    Hi all, can someone give a link, or even a description of a two-way randomized fixed factor design, in which all factors (2) are between subject...

    Started by allie_moore‎, 10-19-2016 01:27 PM
    • Replies: 0
    • Views: 1,687
    10-19-2016, 01:27 PM Go to last post
  58. ANOVA help

    Hi everyone, I desperately need help with this ANOVA stuff. I didn't get to do my 2nd year STATs subjects, and I have no idea how to interpret...

    Started by Dragonaire‎, 10-18-2016 06:55 PM
    • Replies: 0
    • Views: 2,464
    10-18-2016, 06:55 PM Go to last post
  59. ANOVA on simple proportional accuracy scores versus on d prime indexes

    To answer this, you would need to know what d prime is. Here is a link: http://www-psych.stanford.edu/~lera/psych115s/notes/signal/ The method I...

    Started by Poppy1‎, 10-18-2016 05:02 PM
    accuracy, anova, d prime, power, signal detection theory
    • Replies: 0
    • Views: 1,972
    10-18-2016, 05:02 PM Go to last post
  60. Lightbulb What statistical tests to use? - advice please

    Hi all I am working on a project looking at ADHD in a large sample of adolescents. I am looking to investigate whether there are any differences...

    Started by sallysolomon‎, 10-14-2016 11:21 AM
    independent sample, spss, t-test
    • Replies: 2
    • Views: 2,415
    10-17-2016, 11:38 AM Go to last post

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