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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: 14,830
    11-09-2005, 11:21 PM Go to last post
  1. Homogeneity Of Variances assumption in ANOVA use Levene's AND Box's test?

    Hello, I am carrying out a Mixed between-within subjects analysis of variance, following Pallant's (2011) instructions. The chapter I am...

    Started by Jake-Finn‎, 05-23-2015 12:23 PM
    • Replies: 2
    • Views: 97
    Today, 03:43 PM Go to last post
  2. Reliability between sets - is the intraclass correlation coefficient appropriate?

    Hi, I am having trouble applying the ICC to data I have collected for my Masters thesis. I have collected 8 sets (of 30 samples) from 40+...

    Started by Dubzy‎, Today 03:24 PM
    agreement, icc, intraclass correlation, reliability
    • Replies: 0
    • Views: 3
    Today, 03:24 PM Go to last post
  3. Bonferroni Adjustment/Correction and Confidence Intervals

    Hello, I have two questions here. RESOLVED (for now): You perform the bonferroni for multiple tests and/or multiple comparisons. FIRST: I...

    Started by Jake-Finn‎, 05-14-2015 09:39 AM
    bonferroni
    • Replies: 13
    • Views: 349
    Today, 12:23 PM Go to last post
  4. Query on sample sizes and cases in each cell

    Hello, Very simply, I am unsure what a cell means in this context, and would like a clarification. So, I have conducted a study. Before I did...

    Started by Jake-Finn‎, 04-30-2015 06:57 AM
    • Replies: 4
    • Views: 316
    Yesterday, 06:35 PM Go to last post
  5. mean+/-2.5 sd to remove outliers

    Hi everybody. I'm looking for a smart answer to this question: "Provide a justification of using 2.5 standard deviation (and not 3 o 2) for...

    Started by Tan‎, Yesterday 01:24 PM
    • Replies: 0
    • Views: 59
    Yesterday, 01:24 PM Go to last post
  6. Difficult Ranking/Regression Problem

    Hello. I am trying to work out how well a number of independent variables predict the probability of being perceived to be good at a certain task. ...

    Started by proboscus‎, 05-20-2015 12:36 PM
    • Replies: 0
    • Views: 130
    05-20-2015, 12:36 PM Go to last post
  7. HLM- daily diary data for lagged analyses, controlling for DV at t-1?

    Hi all, I have a dataset that consists of daily observations (21 days) of people's daily general mood and daily life satisfaction. I am interested...

    Started by Marissa4USA‎, 05-19-2015 04:51 PM
    • Replies: 2
    • Views: 132
    05-19-2015, 11:27 PM Go to last post
  8. how to do a contrast analysis for an interaction between two within subjects effects?

    Hello! I have a quite simple data pattern but find it hard to test a specific contrast I expected. I have 2 within subjects factors, each with two...

    Started by marie‎, 01-10-2012 03:40 PM
    2 Pages
    1 2
    contrast analysis, interaction, manova, repeated measures anova
    • Replies: 23
    • Views: 5,584
    05-19-2015, 10:15 PM Go to last post
  9. really dumb/basic question about repeated-measures design

    Let's say I did a repeated-measures experiment with 2 conditions and I counterbalanced. If my data were in SPSS, what would be the easiest/usual way...

    Started by bruin‎, 05-18-2015 12:26 PM
    • Replies: 0
    • Views: 115
    05-18-2015, 12:26 PM Go to last post
  10. reporting mixed anova and bonferroni

    I need help with reporting factorial mixed ANOVA's for a research report that I've been tasked with and have been given no information for reporting...

    Started by akindrat18‎, 05-18-2015 09:28 AM
    • Replies: 0
    • Views: 91
    05-18-2015, 09:28 AM Go to last post
  11. No post-hoc tests for Mixed between-within subjects ANOVA aka split-plot ANOVA ?

    Hello, I am performing some "mixed between-within subjects ANOVAs" aka "split-plot ANOVAs" aka "SPANOVAs". I am following Pallant 2011. ...

    Started by Jake-Finn‎, 05-14-2015 02:45 PM
    • Replies: 4
    • Views: 139
    05-15-2015, 12:37 PM Go to last post
  12. Paired/Matched Sample Question

    Hello Everyone, I would greatly appreciate some help with this question. I am trying to help a good friend with her dissertation and am now...

    Started by psycgirl‎, 05-14-2015 05:04 PM
    • Replies: 0
    • Views: 80
    05-14-2015, 05:04 PM Go to last post
  13. SEM with categorical variable/parceling/how to enter in AMOS?

    I need to do an SEM and I'm stumped about what to do with one of my variables, which is a nominal categorical variable (previous experience in x vs....

    Started by buntington‎, 04-14-2014 02:56 PM
    3 Pages
    1 2 3
    sem
    • Replies: 31
    • Views: 3,496
    05-14-2015, 04:21 AM Go to last post
  14. Exclamation Help on stats for research model needed

    I am in need of a quick statistical advice for a study I planned, and I hope you can help me a bit with it. I'd really appreciate your expertise. The...

    Started by yasho1984‎, 04-24-2015 05:15 AM
    • Replies: 6
    • Views: 421
    05-11-2015, 03:51 AM Go to last post
  15. Question z scores to percentiles

    Question 5 Identify the case with the lowest z score. Refer to Appendix A in the Warner (2013) text. Interpret the percentile rank of this z score...

    Started by amhcmh‎, 05-01-2014 06:05 PM
    • Replies: 3
    • Views: 974
    05-08-2015, 03:19 PM Go to last post
  16. Different number of cases for each participant - correlate with background data?

    I'm new to statistics so sorry about my lack of knowledge, but hey that's why I'm here! I have a long data set containing cases of survey...

    Started by King Ding‎, 05-05-2015 02:26 AM
    • Replies: 4
    • Views: 225
    05-05-2015, 06:36 AM Go to last post
  17. 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: 4
    • Views: 2,669
    05-03-2015, 03:42 PM Go to last post
  18. Repeated measures ANOVA; missing data and multiple measures at each time point

    Hi TalkStats I have data from a project. The data is the blood pressure for each participant at day of "baseline" visit, and 3 time points after...

    Started by lb5962‎, 04-27-2015 05:27 AM
    anova, medical statistics, missing data, repeated measures anova
    • Replies: 2
    • Views: 158
    04-27-2015, 09:19 AM Go to last post
  19. ANOVA post-hoc tests: Bonferroni, LSD, or Tukey?

    Hi guys, Not knowing much on the differences between the above tests, which would you recommend for my ANOVA post hoc tests? I was using...

    Started by Lolly‎, 08-16-2013 07:27 AM
    • Replies: 9
    • Views: 23,474
    04-26-2015, 08:05 PM Go to last post
  20. Validating a scale

    Hello! I am trying to provide statistical support for the validity and reliability of a scale. There is only one construct being sought (student...

    Started by shandar7‎, 04-25-2015 03:09 PM
    • Replies: 0
    • Views: 126
    04-25-2015, 03:09 PM Go to last post
  21. IV problem of MANOVA

    Hi everybody, How can we know how many IVs can we put in MANOVA? I have 1 DV with 3 groups, and as IV, the neuropsychological test (CERAD)...

    Started by rezzak‎, 04-24-2015 09:43 AM
    manova
    • Replies: 0
    • Views: 150
    04-24-2015, 09:43 AM Go to last post
  22. Bi-Factor CFA in LISREL help needed

    Hi, I'm attempting to run a bi-factor CFA with LISREL 9.1. I have 26 ordinal items with one general factor (e.g., total score for the scale)...

    Started by Ancole‎, 04-23-2015 01:35 PM
    • Replies: 1
    • Views: 147
    04-23-2015, 11:53 PM Go to last post
  23. Longitude data help needed

    I have collected data at Time 1 and Time 2. The data consists of three questionaires, 1 --> DV= as numeral score on a scale of 1 to 6 or frequency...

    Started by Xbar‎, 04-20-2015 10:45 AM
    • Replies: 4
    • Views: 282
    04-22-2015, 03:35 PM Go to last post
  24. Which test should I run?

    Hello everyone, my data were collected from different groups of participants. More specifically, my study had a baseline and several experimental...

    Started by julia1985‎, 04-21-2015 03:46 AM
    • Replies: 3
    • Views: 270
    04-21-2015, 07:46 AM Go to last post
  25. puzzling results when contrasting conditions in 3 x 2 design

    Hi everyone, I'm encountering something puzzling when analyzing my data. My data consists out of 2 independent variables and one dependent...

    Started by KoenStat‎, 04-20-2015 05:00 AM
    3 x 2 design, contrast analysis, spss
    • Replies: 0
    • Views: 138
    04-20-2015, 05:00 AM Go to last post
  26. Post Research in sound symbolism (Simple request, serious help demanded)

    Hello everyone, I'm glad that I found this forum. I'm actually a student in Sciences of Language. I have an M.A thesis on Sound Symbolism. It's a...

    Started by Theram‎, 04-16-2015 06:25 PM
    • Replies: 2
    • Views: 328
    04-17-2015, 08:19 PM Go to last post
  27. Single subject Kruskal Wallis Test

    Hello, I posted a while ago about a statistics conundrum I was having. I think I may have solved it but I wanted to check with some statistics...

    Started by clareish‎, 04-14-2015 12:36 PM
    • Replies: 3
    • Views: 316
    04-15-2015, 06:43 AM Go to last post
  28. Help with use of Transformed variables in regression analysis

    Hello Everyone, My DV and 2 IVs were negatively skewed so I Transformed the data using log transformation. Now, I performed regression analysis...

    Started by Arooba‎, 04-13-2015 02:34 PM
    • Replies: 7
    • Views: 332
    04-14-2015, 07:29 AM Go to last post
  29. Standard deviation conversion

    For my masters thesis I am conducting a meta-analysis looking at the differences in CHC abilities within Autism Spectrum Disorders. I have gathered...

    Started by slgur81‎, 04-14-2015 04:49 AM
    • Replies: 0
    • Views: 157
    04-14-2015, 04:49 AM Go to last post
  30. HELP - One-way ANOVAs/planned comparisons/correlation

    Hi all, I'm currently running a Psychology experiment: the effect of background music on memory and mood. I will be using SPSS to conduct two...

    Started by jwren‎, 04-12-2015 11:08 AM
    ancova, anova, planned comparison, psychology, spss
    • Replies: 2
    • Views: 211
    04-14-2015, 02:25 AM Go to last post
  31. 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: 0
    • Views: 164
    04-13-2015, 12:45 PM Go to last post
  32. interaction nonlinear mediation?

    Hi, For my research, I would like to test whether a nonlinear continuous variable mediates the effect between a withinsubjects factor (3 levels) x...

    Started by Miilouh‎, 04-10-2015 05:56 AM
    • Replies: 2
    • Views: 268
    04-10-2015, 07:45 AM Go to last post
  33. How can I examine whether two lists are significantly different?

    deleted post

    Started by coffeee‎, 04-09-2015 07:26 AM
    • Replies: 0
    • Views: 216
    04-09-2015, 07:26 AM Go to last post
  34. Longitudinal data: analyzing score changes from baseline between 2 groups

    Hi all, figured I'd post this in here because there may be more experience in dealing with changes in psychometric scores (e.g. BAI, PSS, MSPSS) over...

    Started by joeschmocrow‎, 04-08-2015 10:46 PM
    • Replies: 5
    • Views: 337
    04-08-2015, 11:58 PM Go to last post
  35. 3 X 2 X 2 mixed design

    Hi all, First time posting. I am having trouble 1) figuring out spss output for and 2) interpreting findings for a study I conducted with a 3...

    Started by kme‎, 04-08-2015 02:36 PM
    3-way interaction, mixed design, spss output
    • Replies: 0
    • Views: 195
    04-08-2015, 02:36 PM Go to last post
  36. Very easy question about pooled error.

    Hi, First time poster. I haven't done quantitative analysis for several years and I'm shamefully having trouble with a simple issue. I'm doing...

    Started by kansaskansas‎, 04-08-2015 02:18 PM
    • Replies: 0
    • Views: 147
    04-08-2015, 02:18 PM Go to last post
  37. Smile How to use normative data correctly for group comparisons

    This is my first time doing research at this level and I am therefore not really sure how to go about what I need help with, but I’ll try to make...

    Started by hasargen‎, 04-07-2015 07:02 AM
    • Replies: 0
    • Views: 218
    04-07-2015, 07:02 AM Go to last post
  38. Is it possible to run ANOVA using Mean differences?

    I'm wondering whether it is possible, and how to run an ANOVA on mean differences rather than on means. I want to run a 2*3 ANOVA on multiple...

    Started by Jon_Gall‎, 04-06-2015 01:54 PM
    anova, factorial design, psychology
    • Replies: 0
    • Views: 218
    04-06-2015, 01:54 PM Go to last post
  39. Is this Experimental Design even possible? Help please!

    Hello all, First thank you in advance for any and all help given in response to this question. I've been searching this forum as well as other...

    Started by thechairman‎, 04-02-2015 11:53 AM
    design of experiments, experimental design, methodology, psychology, psychology statistics
    • Replies: 1
    • Views: 277
    04-06-2015, 02:12 AM Go to last post
  40. ANOVA with significant interaction, but no significance found in follow up tests

    Hi there, I'm looking for some suggestions on what to do next, or, how to verbally explain my confusing findings. I have a 2X2 between subjects...

    Started by lauramdavies‎, 04-04-2015 10:04 AM
    • Replies: 3
    • Views: 307
    04-05-2015, 08:13 AM Go to last post
  41. Help with the formatting of my data in SPSS

    Hi guys, For my experiment i was looking at participants reaction time and accuracy in a shape location task. Each participant engaged in 16...

    Started by Statosaurus‎, 04-04-2015 06:30 AM
    • Replies: 1
    • Views: 223
    04-05-2015, 03:15 AM Go to last post
  42. Dissertation Results Comparisons - which SPSS method should I use?

    Hi everyone, I'm in my final year as a Psychology student aspiring to be a cognitive neuroscientist (accepted to birmingham university provided I...

    Started by Statisticsnewby‎, 04-03-2015 01:36 PM
    • Replies: 2
    • Views: 338
    04-04-2015, 06:08 AM Go to last post
  43. which data to use

    Hi I collected pre-intervention quantitative data via a questionnaire from 70 children 2 years ago. I then went to do the post intervention data...

    Started by RAYDO‎, 04-03-2015 03:51 PM
    • Replies: 0
    • Views: 175
    04-03-2015, 03:51 PM Go to last post
  44. Chi Squared test of proportions

    Hi there, I am currently coming towards the end of my dissertation, and I am looking for a bit of help with how to test distributions using a chi...

    Started by tomkilbey29‎, 03-31-2015 11:24 AM
    • Replies: 0
    • Views: 238
    03-31-2015, 11:24 AM Go to last post
  45. Post Pearsons correlation, confidence intervals, bootstrapping... Statistical nightmare

    I am currently running a project where I have 4 variables and a questionannaire with 4 subscales. I have performed a Pearsons correlation on this...

    Started by DK-IV‎, 03-31-2015 09:55 AM
    bootstrapping, confidence intervals, pearsons correlation
    • Replies: 0
    • Views: 193
    03-31-2015, 09:55 AM Go to last post
  46. Question Workshop evaluation with control group and pre/post/follow-up questionnaire

    Hello, Thanks for taking the time to read this rather long message. It will become clear that I have a terrible grasp of data analysis and need...

    Started by Beano‎, 03-23-2015 11:07 AM
    ancova, questionnaire
    • Replies: 9
    • Views: 440
    03-30-2015, 09:19 AM Go to last post
  47. One-Way Anova - Combining three variables into one variable with three levels.

    Hello, I have one independent variable with three levels: Sexual Prime Condition, Male Prime and Control Prime. I aim to conduct a one-way Anova...

    Started by RhiannonPidgeon‎, 03-30-2015 07:23 AM
    • Replies: 0
    • Views: 179
    03-30-2015, 07:23 AM Go to last post
  48. Question Buss-Perry syntax

    Hi guys, need help for a project research. I need to compare and analyze agressivness levels using Buss-Perry Aggresion Questionnaire, but I get lost...

    Started by statbeginner‎, 03-26-2015 03:40 PM
    • Replies: 0
    • Views: 225
    03-26-2015, 03:40 PM Go to last post
  49. What analysis for two independent groups with one additional dependent group?

    Hi all We had people record responses while assigned to 2 different conditions (A and B). We then divided the responses from participants in B...

    Started by Søren‎, 03-25-2015 08:21 AM
    • Replies: 8
    • Views: 422
    03-26-2015, 06:24 AM Go to last post
  50. No interaction but significant planned comparisons - how to interpret?

    Hi, I'm reading an article in which the authors describe how they weren't able to find an interaction between A and B, but that in planned...

    Started by replica‎, 12-02-2014 05:45 AM
    • Replies: 3
    • Views: 212
    03-25-2015, 01:26 PM Go to last post
  51. Non-parametric three-way ANOVA?

    Hi everyone, I and some of my classmates need to include a data analysis strategy in a research proposal assignment and could really use some help...

    Started by Katbooey‎, 03-23-2015 05:16 PM
    anova, spss
    • Replies: 3
    • Views: 348
    03-24-2015, 03:48 AM Go to last post
  52. How to examine relationship between independent, dependent and explanatory variables?

    Hello, I am doing a study looking at the effects of positive thinking (PT) and exercise on depression. I'll be measuring at LEAST 2 outcomes. So...

    Started by Jake-Finn‎, 03-19-2015 06:12 PM
    • Replies: 4
    • Views: 460
    03-22-2015, 07:35 PM Go to last post
  53. Boston Naming Test

    Dear Friends, I am trying to define the differences of two means in Boston Naming Test (BNT). I want to conduct a multipl regression with...

    Started by rezzak‎, 03-22-2015 03:47 AM
    bootstraping, boston naming test, regression
    • Replies: 0
    • Views: 264
    03-22-2015, 03:47 AM Go to last post
  54. Smile Need help: reg EQS and Goodness of Fit tests

    Hi! Hope you guys could help me out here... I'm doing a path analysis on EQS, and the goodness of fit test results i got are the ff - i'm not sure if...

    Started by lissa89‎, 03-16-2015 04:17 AM
    cfi, eqs, goodness-of-fit, rmsea
    • Replies: 7
    • Views: 497
    03-17-2015, 12:39 PM Go to last post
  55. Comparing two groups in the Theory of Planned Behavior

    Greetings all: I am trying to determine the best method to compare two groups (gender in this case) means/factor loadings on the Theory of Planned...

    Started by Nole‎, 03-11-2015 05:11 PM
    • Replies: 1
    • Views: 466
    03-16-2015, 07:48 PM Go to last post
  56. Thumbs up Which test to use? Correlation or Regression

    Hi, I need some help with choosing the statistical analysis. Details of my study. all participants will complete surveys measuring self...

    Started by sarah.cho‎, 03-14-2015 07:47 PM
    control group, correlation analysis, regression analysis, thesis
    • Replies: 5
    • Views: 424
    03-16-2015, 08:13 AM Go to last post
  57. Appropriate Statistical Test?

    Hi everyone, I have a question regarding the appropriate statistical test to use for a particular experiment. This is a 2x2 within-subject...

    Started by boogeyzero‎, 03-12-2015 02:15 AM
    • Replies: 0
    • Views: 299
    03-12-2015, 02:15 AM Go to last post
  58. How to do Mediation across pre-post timepoints?

    Hi all, I am looking into analyzing potential mediation and not sure how to approach it with two timepoints. For some context, participants are...

    Started by roquera‎, 03-10-2015 06:35 PM
    longitudinal, mediation, mediation analysis
    • Replies: 1
    • Views: 285
    03-11-2015, 07:17 AM Go to last post
  59. Analysis for a repeated measures design with covariate that varies over conditions?

    Hi all, I'm trying to find the correct analysis that will allow me to carry out the equivalent of a repeated measures MANCOVA with a covariate...

    Started by KVella‎, 03-05-2015 01:33 AM
    anova, covariate, manova, repeated measures, spss
    • Replies: 3
    • Views: 475
    03-10-2015, 04:03 PM Go to last post
  60. Unhappy Likert scale analysis: Help!

    Hi, I'm new here. I'm at my final bachelor year and in order to graduate, I need to write a thesis. The subject of my thesis regards the...

    Started by JustJoe‎, 03-05-2015 12:52 PM
    likert scale
    • Replies: 3
    • Views: 386
    03-06-2015, 02:10 PM Go to last post

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