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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: 22,776
    11-09-2005, 11:21 PM Go to last post
  1. Moderated Mediation Model using PROCESS

    Hello, I am running a moderated mediation model using PROCESS macro in SPSS and a bit confused with the results. The interaction of IV and...

    Started by Jchavano‎, 08-16-2016 10:20 AM
    moderated mediation, process
    • Replies: 0
    • Views: 304
    08-16-2016, 10:20 AM Go to last post
  2. [Combining data][2-way between-groups ANOVA]

    Dear smart people, I am currently finishing my Master's in International Business Communication and I am wondering if I can combine data to...

    Started by alanacrs‎, 08-12-2016 08:50 AM
    anova, combining data
    • Replies: 0
    • Views: 268
    08-12-2016, 08:50 AM Go to last post
  3. What analysis method available? Exploratory analysis with repeated measures design.

    Hi, I would like to know if there is any analysis method that explores patterns between independent variables that are repeatedly measured. To...

    Started by Skyskipper‎, 08-12-2016 07:04 AM
    • Replies: 0
    • Views: 215
    08-12-2016, 07:04 AM Go to last post
  4. Inter-rater reliability - what analysis do I use?

    During an intensive 5-day group therapy camp, where counselors are 1:1 paired with a camper (25 campers, 25 counselors), we collected data on the...

    Started by PsychResearch‎, 08-10-2016 07:29 PM
    • Replies: 0
    • Views: 348
    08-10-2016, 07:29 PM Go to last post
  5. Unhappy Mixed ANOVA - How to interpret and write up results

    Hello everyone! I'm struggling with my first-ever data analysis using SPSS. I have conducted a mixed ANOVA using a total number of objects kept...

    Started by Viellina‎, 08-10-2016 10:38 AM
    • Replies: 0
    • Views: 349
    08-10-2016, 10:38 AM Go to last post
  6. Different Outcomes between MANOVA and PROCESS

    Hello, I'm checking a moderated mediation. First of all I put my both IV and both mediators in a MANOVA. Next I put all variables in PROCESS....

    Started by yologer‎, 08-10-2016 08:27 AM
    • Replies: 0
    • Views: 316
    08-10-2016, 08:27 AM Go to last post
  7. Question Anova: Components of variation in population (notation in Doncaster and Davey)

    Hi I am reading Doncaster and Davey's 2007 book. The book lists the appropriate ANOVA/ANCOVA models for combinations of nested and crossed...

    Started by Shraspen‎, 08-08-2016 02:45 PM
    • Replies: 0
    • Views: 317
    08-08-2016, 02:45 PM Go to last post
  8. Pair t-test with non-independent samples

    Dear list, In my experiment, each subject of my sample has three time-series of data: tc_A, tc_B and tc_C. Using Pearson correlation within...

    Started by john.gelburg‎, 08-07-2016 01:41 PM
    t-test
    • Replies: 0
    • Views: 376
    08-07-2016, 01:41 PM Go to last post
  9. Multilevels model versus Regression

    Assume I want to model data on dependent variable y_i for N observations belonging to J groups. Assume we are looking at N students distributed on J...

    Started by JesperHP‎, 08-03-2016 03:29 PM
    james & stein, shrinkage
    • Replies: 6
    • Views: 536
    08-05-2016, 01:11 PM Go to last post
  10. Sample size for mediation analysis

    Does anyone know of any clear guidance on how to calculate sample size for mediation analyses? My research is looking at whether the relationship...

    Started by missychar‎, 08-05-2016 04:59 AM
    • Replies: 2
    • Views: 366
    08-05-2016, 10:13 AM Go to last post
  11. Association between interval and possibly binary variables

    Hello, I am in the process of writing my dissertation proposal, which will be examining treatment outcomes in first episode psychosis clients....

    Started by emma621‎, 08-04-2016 08:47 PM
    • Replies: 1
    • Views: 289
    08-04-2016, 11:38 PM Go to last post
  12. 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: 379
    08-04-2016, 05:53 AM Go to last post
  13. Comparing groups when each subject can be in multiple groups - which test?

    Hi all, I would like to compare groups on a ratio DV when each subject can belong to more than one group. I am used to data where each subject...

    Started by RobCooper‎, 08-03-2016 04:37 AM
    • Replies: 0
    • Views: 243
    08-03-2016, 04:37 AM Go to last post
  14. Mixed ANOVA post hocs-paired samples t tests or bonferroni corrected?

    Hey everyone, Just a question on what is the best statistical test to report with this study I am doing. So, in the study, I am separating...

    Started by aiyer1‎, 08-01-2016 11:05 AM
    • Replies: 0
    • Views: 630
    08-01-2016, 11:05 AM Go to last post
  15. Control Variables & moderated Mediation

    Hello, I'm testing a moderated mediation with two dependent variables, so I'm running two tests with PROCESS SPSS. I have included 5 control...

    Started by yologer‎, 07-31-2016 11:22 AM
    control variables
    • Replies: 4
    • Views: 588
    08-01-2016, 08:05 AM Go to last post
  16. Repeated measures ANOVA on correlation coefficients

    The purpose of the study is to examine a gradual linear decay in an EEG signal over a period of time. I measured the average signal over 20 bins of...

    Started by shlomit‎, 08-01-2016 01:36 AM
    correlated correlations, r to z fisher transform., repeated measures anova
    • Replies: 0
    • Views: 284
    08-01-2016, 01:36 AM Go to last post
  17. Reporting GEE results

    I'm working on a paper, and was struggling with how to analyze one question, and finally figured out that I needed to use GEE, ran the model, and...

    Started by cmc253‎, 07-29-2016 05:47 PM
    gee
    • Replies: 1
    • Views: 932
    07-29-2016, 09:20 PM Go to last post
  18. Question comparing distributions

    hi as a part of my thesis, i have two discrete distributions. i want to check if it is possible that they both drawn from the same distribution. i...

    Started by hagit‎, 07-28-2016 07:14 AM
    • Replies: 3
    • Views: 537
    07-28-2016, 06:30 PM Go to last post
  19. Wilcoxon Signed rank test, Students's T-test, or a mixture of both?

    Hello! For my dissertation I am looking at the temporal order of physiological and behavioural events before a voluntary action. I have 12 different...

    Started by pepperpockets‎, 07-27-2016 04:24 AM
    psychology, t-test, wilcoxon signed-rank test
    • Replies: 4
    • Views: 892
    07-27-2016, 08:32 AM Go to last post
  20. Meaningful Variables

    Some background: I am an early childhood educator taking my very first statistics course. We are in week three and I am already lost. We are...

    Started by amhcmh‎, 04-26-2014 11:12 AM
    • Replies: 6
    • Views: 7,048
    07-26-2016, 07:16 PM Go to last post
  21. Exclamation Discrepancy between Chi-square and sensitivity and specificity

    The performance of 19 impaired and 42 typically developing children was tested using 3 assessment parameters to see which parameter best...

    Started by Naomiyiftach‎, 07-24-2016 08:14 PM
    chi-square, chi-square help, diagnostic accuracy
    • Replies: 3
    • Views: 685
    07-25-2016, 08:32 AM Go to last post
  22. How to convert two different types of measurement (both in ms) to run a MANOVA?

    I measured reaction time and movement time in an experiment (within-subjects measures) and want to run a MANOVA in SPSS with these measures as the...

    Started by Poppy1‎, 07-19-2016 09:25 PM
    repeated measures manova, spss, z-scores
    • Replies: 2
    • Views: 593
    07-20-2016, 08:46 PM Go to last post
  23. Question Study design flaw - no participant IDs.

    Hi :wave:, I have been asked to do the statistical analysis aspect on a mixed methods study that was supposed to follow a pre/post analysis...

    Started by dublinguy‎, 07-18-2016 02:42 PM
    flaws, participants number, pre post, spss, study design
    • Replies: 5
    • Views: 588
    07-18-2016, 06:35 PM Go to last post
  24. Data screening for regression analysis

    I am currently attempting an assessment for my Psychology MSc but am a little confused by the screening required. I have three independent...

    Started by Missjeevious‎, 07-15-2016 03:24 PM
    • Replies: 4
    • Views: 456
    07-16-2016, 09:40 PM Go to last post
  25. Analyzing Sleep and Productivity Data

    You are given data that stores the hours that an individual slept every night between the data's start and end points. You are also given the...

    Started by c_harris‎, 07-12-2016 06:03 PM
    data analysis
    • Replies: 3
    • Views: 518
    07-13-2016, 11:17 AM Go to last post
  26. Interpreting findings in Behavioural Science Journal

    Hi everyone, I've been trying my best to think about how to put this problem across. The authors of the paper said they used a multinomial logits...

    Started by WebberNaturals‎, 07-11-2016 11:35 AM
    • Replies: 0
    • Views: 278
    07-11-2016, 11:35 AM Go to last post
  27. Red face The Best Statistical Analysis Method and How to calculate number of participants

    Hello all! I have a research design : As it can be seen A, B, C are independent variables; D is a mediator and E is the dependent...

    Started by Ayfer‎, 07-09-2016 12:59 PM
    • Replies: 4
    • Views: 529
    07-10-2016, 02:19 AM Go to last post
  28. Psychology Statistics Help!!!

    I need help with 3 exercises!!! I am attaching the problems. Numbers 2,4 and 8!

    Started by ALogan0623‎, 07-08-2016 01:02 PM
    • Replies: 1
    • Views: 372
    07-08-2016, 01:16 PM Go to last post
  29. two way anova?

    Hello. I am hoping you may be able to help me understand why this is a two-way anova (it is possible it isn't) The assignment gives the following...

    Started by ryancpalmer‎, 07-07-2016 11:10 AM
    • Replies: 2
    • Views: 460
    07-08-2016, 08:31 AM Go to last post
  30. Which stats test would be best to use?

    I've got an emotional recognition task. There are 3 emotions (disgust, sad, fear), each with 10 different intensities. I only have 1 group (the...

    Started by psem‎, 07-08-2016 05:47 AM
    • Replies: 1
    • Views: 458
    07-08-2016, 08:17 AM Go to last post
  31. Which statistical test should be used?

    Take a quiz and refresh your knowledge in selecting the appropriate statistical test/procedure to answer a given research question. This...

    Started by dlak‎, 07-07-2016 03:08 PM
    data analysis, quantitative research, research methods, research questions, statistical analysis
    • Replies: 0
    • Views: 379
    07-07-2016, 03:08 PM Go to last post
  32. Reporting Binomial Fully

    Hi All! I have completed a number of binomial distributions with published results for my PhD thesis - however I only reported the binomial p...

    Started by claireth‎, 07-05-2016 05:43 AM
    • Replies: 0
    • Views: 339
    07-05-2016, 05:43 AM Go to last post
  33. What is the chance of finding a partner ?

    Hello I am a short film maker who knows nothing about stats. I stumbled across a silly white paper by Peter Backus, that seems to be quite famous...

    Started by chlowden‎, 02-02-2016 04:10 AM
    • Replies: 4
    • Views: 610
    07-03-2016, 12:15 PM Go to last post
  34. Smile What is the appropriate test for testing the difference between 3 variables?

    Hi all, I have a group of n subjects. Each subject has 3 measurements x, y, and z. 1-What kind of statistical analysis I should perform to see...

    Started by zeydabadi‎, 06-29-2016 12:18 PM
    anova, ttest
    • Replies: 3
    • Views: 517
    06-30-2016, 01:37 AM Go to last post
  35. Question Pearson VS Spearman Choosing and interpreting the test

    Hello, I need to fix the problem choosing and interpreting the correct statistical test for my data. I have data from (a) Minnesota Job...

    Started by Alanky‎, 06-29-2016 05:47 AM
    pearson, quantitative research, spearman, spss, statistical test
    • Replies: 1
    • Views: 1,012
    06-29-2016, 08:38 AM Go to last post
  36. multidimensional scaling (with clusters)

    I am writing my bachelor's thesis which was based on a study by Buma, Bakker and Oudejans (2014). Unfortunately I just realised that I misinterpreted...

    Started by Kaia_4‎, 06-13-2016 12:14 PM
    • Replies: 11
    • Views: 585
    06-29-2016, 04:00 AM Go to last post
  37. Experimental design: find the deviant

    I have a group of trained raters for speech recordings, their rating should be based on the content. not by the gender of the speech. I want to run a...

    Started by pancy‎, 06-27-2016 12:24 AM
    • Replies: 0
    • Views: 372
    06-27-2016, 12:24 AM Go to last post
  38. Non-Normality - Measuring of stereotypes

    Hello :) I'm researching a moderated mediation (2x2) with two mediators. To test my MANOVA and moderated mediation I have to check the normality...

    Started by yologer‎, 06-26-2016 03:43 PM
    manova, normality
    • Replies: 0
    • Views: 322
    06-26-2016, 03:43 PM Go to last post
  39. Guidance for type of statistical test to use

    I am self doubting myself as I have been looking at this screen for too long. I am interested in testing emotion discrimination in adults using a...

    Started by sAL2016‎, 06-24-2016 08:59 PM
    • Replies: 1
    • Views: 341
    06-24-2016, 11:32 PM Go to last post
  40. Deleting outliers to boost correlation. A sound practice?

    Dear all, I have two measures with a correlation of .20, the sample size is 210. I expected a higher correlation. I deleted around 60 outliers and...

    Started by Anthony_1000‎, 06-24-2016 03:48 AM
    • Replies: 5
    • Views: 638
    06-24-2016, 06:25 PM Go to last post
  41. Bonferroni vs. Modified Bonferroni

    Hello, I was wondering if anyone knows when it is appropriate to use a Bonferroni correction over a Modified Bonferroni correction? Thanks :)

    Started by StatStud1‎, 06-17-2016 11:18 PM
    bonferroni
    • Replies: 1
    • Views: 514
    06-18-2016, 07:24 AM Go to last post
  42. Factor analysis

    Hello! Apologies if the answer is very obvious but i am new to this. I am running an exploratory factor analysis for a scale developement study....

    Started by LEMONIAS‎, 06-07-2016 01:17 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 2,757
    06-15-2016, 06:34 PM Go to last post
  43. Post Help me (Bachelor Project) Rank Order Scale

    hi, i am from indonesian sorry for bad ENGLISH grammar. i have problem with Rank Scale Order. so here we go, i have questionnaire for 10...

    Started by cybercutte‎, 06-13-2016 04:37 AM
    • Replies: 1
    • Views: 343
    06-13-2016, 12:04 PM Go to last post
  44. Survey item analysis, two ways to report low rated items. Is my friend wrong?

    My friend and I analyzed the same data but came up with two different sets of results :shakehead . I'd like help to understand why. Situation:...

    Started by Michael T‎, 06-09-2016 04:47 PM
    analysis, likert items, likert scales
    • Replies: 1
    • Views: 318
    06-09-2016, 07:41 PM Go to last post
  45. parametric or non-parametric in comparison of a dependent variable within several gro

    down vote favorite I am comparing maths and chemistry scores of students in several schools. I am not comparing the schools with each other. I am...

    Started by tabrizbalasi‎, 06-09-2016 04:15 PM
    nonparametric, normal distribution, normality, parametric
    • Replies: 0
    • Views: 271
    06-09-2016, 04:15 PM Go to last post
  46. How often is the null hypothesis true in psychology?

    Hullo all, Something that I'm really interested in is the question of what should be the "default" form of statistical analysis used by everyday...

    Started by CowboyBear‎, 04-17-2016 12:08 AM
    2 Pages
    1 2
    • Replies: 29
    • Views: 1,604
    06-08-2016, 09:30 PM Go to last post
  47. Meta-analysis to compare 3 randomized control trials?

    I'm proposing to evaluate an outcome in three completed randomized controlled trials. The primary goal is to analyze a new outcome in each data set...

    Started by ACAD‎, 06-07-2016 11:15 PM
    manova, meta-analysis, randomized control trials
    • Replies: 0
    • Views: 328
    06-07-2016, 11:15 PM Go to last post
  48. Lightbulb Studying the combined effects of mothers and fathers depression on child outcomes

    Hello everyone! I am new here and am really needing some advice on what is the best statistical method to use for my doctoral research. The...

    Started by rachrach‎, 06-07-2016 01:40 PM
    combined effects, dyadic data, family data, multilevel modelling
    • Replies: 1
    • Views: 327
    06-07-2016, 03:06 PM Go to last post
  49. How to analyze categorical data with repeated measures?

    Dear all, I struggle with the analysis of my data and thought someone here has a suggestion for me. I measured the categorical responses in a...

    Started by footos‎, 06-07-2016 10:51 AM
    • Replies: 0
    • Views: 248
    06-07-2016, 10:51 AM Go to last post
  50. Two-way or one-way MANOVA?

    Hi all! I'm struggling with the following design: I had 257 respondents filling in my survey with a manipulated website. The website was...

    Started by Rob1913‎, 06-07-2016 06:41 AM
    manova; two-way; one-way
    • Replies: 3
    • Views: 471
    06-07-2016, 09:03 AM Go to last post
  51. Interpreting repeated measures ANOVA results in Intervention Study

    I'm having one of those late night working problems, where I'm suddenly second guessing all my work and I seem to have lost all my statistics...

    Started by cait‎, 04-06-2016 12:49 AM
    intervention, repeated measures
    • Replies: 3
    • Views: 920
    06-06-2016, 06:51 AM Go to last post
  52. Identify Outlier

    Hi, I need help to identify outlier for my research project :) Model: 2x2 moderated mediation 1.) IV: both are nominal (rich vs. poor & public...

    Started by yologer‎, 06-02-2016 06:25 PM
    mediation, moderated, outlier
    • Replies: 2
    • Views: 437
    06-04-2016, 05:49 PM Go to last post
  53. Question Choosing the right statistical analysis for my research

    Hi all, I was wondering if anyone could help me. I'm struggling to figure out which type of analysis I need to use for my research: I have 900...

    Started by lzid‎, 06-03-2016 07:42 AM
    • Replies: 2
    • Views: 386
    06-04-2016, 04:41 AM Go to last post
  54. Methods and Data Analysis for Experimental Study Design

    Good day! I am working on my methods section for my dissertation proposal and want to ensure I am thinking through my methods and data analysis...

    Started by CupcakeKat‎, 06-02-2016 02:54 PM
    data analysis, manova, research design
    • Replies: 2
    • Views: 519
    06-03-2016, 06:54 PM Go to last post
  55. calculating variance of mean proportions for meta-analysis

    We aim to do a meta-analysis on mean proportions using. Thus, individual proportions (accuracy scores) within a study are already averaged to a mean...

    Started by Anne Fleur‎, 06-03-2016 07:08 AM
    • Replies: 1
    • Views: 302
    06-03-2016, 11:51 AM Go to last post
  56. Reporting participant numbers for meta analysis

    Hi there, I am hoping you may be able to help me with a query I have. I am conducting a meta analysis on Random Control Trials using REVMAN. I...

    Started by tcr‎, 06-01-2016 11:40 AM
    means, meta analysis, population, revman, standard deviation
    • Replies: 2
    • Views: 293
    06-03-2016, 07:31 AM Go to last post
  57. How to adjust means?

    I have two teachers giving marks to two groups of students in one class.I find that one of the teachers is more lenient in marking therefore he gives...

    Started by pancy‎, 05-24-2016 11:06 PM
    • Replies: 3
    • Views: 355
    06-01-2016, 11:05 PM Go to last post
  58. Question about performing ANOVA

    Hello Everyone! I am Andrew and i am a new member! I have conducted my own research and i am about to report the results and i would appreciate...

    Started by Kantekas‎, 05-29-2016 01:06 PM
    • Replies: 3
    • Views: 403
    05-29-2016, 04:18 PM Go to last post
  59. Compare means of subgroups of same population

    Hi :wave: I tested life satisfaction on a sample of 500 respondents. In the same questionaire I also tested whether the respondent was a smoker or...

    Started by guszfraba‎, 05-27-2016 02:15 PM
    • Replies: 2
    • Views: 446
    05-27-2016, 03:54 PM Go to last post
  60. Question Please help: ANOVA

    I'm asking a group of young people who have experienced loss to complete the Posttraumatic Growth Inventory and then a sheet about different factors...

    Started by bremner‎, 05-25-2016 07:05 AM
    anova, sample size, test
    • Replies: 2
    • Views: 315
    05-27-2016, 01:28 PM Go to last post

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