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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: 28,813
    11-10-2005, 12:21 AM Go to last post
  1. 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: 3,878
    05-25-2015, 12:23 PM Go to last post
  2. 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: 1,090
    05-24-2015, 06:35 PM Go to last post
  3. 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: 724
    05-20-2015, 12:36 PM Go to last post
  4. 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: 1,205
    05-19-2015, 11:27 PM Go to last post
  5. 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: 731
    05-18-2015, 12:26 PM Go to last post
  6. 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: 682
    05-18-2015, 09:28 AM Go to last post
  7. 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: 1,264
    05-15-2015, 12:37 PM Go to last post
  8. 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: 854
    05-14-2015, 05:04 PM Go to last post
  9. 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: 1,551
    05-11-2015, 03:51 AM Go to last post
  10. 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: 5,927
    05-08-2015, 03:19 PM Go to last post
  11. 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: 1,055
    05-05-2015, 06:36 AM Go to last post
  12. 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: 2,421
    04-27-2015, 09:19 AM Go to last post
  13. 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: 55,285
    04-26-2015, 08:05 PM Go to last post
  14. 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: 1,458
    04-25-2015, 03:09 PM Go to last post
  15. 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: 616
    04-24-2015, 09:43 AM Go to last post
  16. 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: 1,305
    04-23-2015, 11:53 PM Go to last post
  17. 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: 944
    04-22-2015, 03:35 PM Go to last post
  18. 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: 1,008
    04-21-2015, 07:46 AM Go to last post
  19. 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: 638
    04-20-2015, 05:00 AM Go to last post
  20. 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: 1,599
    04-17-2015, 08:19 PM Go to last post
  21. 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: 2,021
    04-15-2015, 06:43 AM Go to last post
  22. 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: 1,650
    04-14-2015, 07:29 AM Go to last post
  23. 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: 763
    04-14-2015, 04:49 AM Go to last post
  24. 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: 1,054
    04-14-2015, 02:25 AM Go to last post
  25. 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: 847
    04-10-2015, 07:45 AM Go to last post
  26. How can I examine whether two lists are significantly different?

    deleted post

    Started by coffeee‎, 04-09-2015 07:26 AM
    • Replies: 0
    • Views: 764
    04-09-2015, 07:26 AM Go to last post
  27. 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: 1,125
    04-08-2015, 11:58 PM Go to last post
  28. 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: 1,375
    04-08-2015, 02:36 PM Go to last post
  29. 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: 622
    04-08-2015, 02:18 PM Go to last post
  30. 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: 1,090
    04-07-2015, 07:02 AM Go to last post
  31. 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: 1,068
    04-06-2015, 01:54 PM Go to last post
  32. 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: 808
    04-06-2015, 02:12 AM Go to last post
  33. 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: 1,962
    04-05-2015, 08:13 AM Go to last post
  34. 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: 914
    04-05-2015, 03:15 AM Go to last post
  35. 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: 1,095
    04-04-2015, 06:08 AM Go to last post
  36. 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: 700
    04-03-2015, 03:51 PM Go to last post
  37. 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: 825
    03-31-2015, 11:24 AM Go to last post
  38. 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: 639
    03-31-2015, 09:55 AM Go to last post
  39. 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: 2,433
    03-30-2015, 09:19 AM Go to last post
  40. 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: 746
    03-30-2015, 07:23 AM Go to last post
  41. 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: 871
    03-26-2015, 03:40 PM Go to last post
  42. 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: 1,643
    03-26-2015, 06:24 AM Go to last post
  43. 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 06:45 AM
    • Replies: 3
    • Views: 1,029
    03-25-2015, 01:26 PM Go to last post
  44. 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: 2,753
    03-24-2015, 03:48 AM Go to last post
  45. 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: 1,358
    03-22-2015, 07:35 PM Go to last post
  46. 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: 1,717
    03-22-2015, 03:47 AM Go to last post
  47. 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: 1,490
    03-17-2015, 12:39 PM Go to last post
  48. 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: 2,564
    03-16-2015, 07:48 PM Go to last post
  49. 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: 900
    03-16-2015, 08:13 AM Go to last post
  50. 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: 1,065
    03-12-2015, 02:15 AM Go to last post
  51. 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: 1,587
    03-11-2015, 07:17 AM Go to last post
  52. 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 02:33 AM
    anova, covariate, manova, repeated measures, spss
    • Replies: 3
    • Views: 1,170
    03-10-2015, 04:03 PM Go to last post
  53. 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 01:52 PM
    likert scale
    • Replies: 3
    • Views: 1,367
    03-06-2015, 03:10 PM Go to last post
  54. A Priori Power and Sensibility analysis

    Hi everyone, I'm new around here, so i don't know if this thread belong to this board, but if it doesn't just let me know. Here is the thing....

    Started by dhvalden‎, 03-02-2015 01:47 PM
    • Replies: 0
    • Views: 1,015
    03-02-2015, 01:47 PM Go to last post
  55. Mediation in SPSS

    Hi all, I need some help with the research that I'm curretly doing. I would like to analyse the mediation effect in this case: 1. SES -...

    Started by marta2992‎, 02-27-2015 10:09 AM
    mediation. spss.
    • Replies: 1
    • Views: 1,046
    02-27-2015, 01:13 PM Go to last post
  56. Beta weights - HELP PLEASE

    Are Beta weights the same as squared predictor-dependent variable correlation coefficients? Thanks! Ryan_Cohen

    Started by Ryan_Cohen‎, 02-24-2015 09:06 PM
    • Replies: 2
    • Views: 1,046
    02-25-2015, 06:48 PM Go to last post
  57. unipolar and bipolar scales

    Can I correlate unipolar and bipolar scales without doing anything special? A unipolar scale runs from zero to some number, e.g., 0-50 (usually...

    Started by mkspindler1‎, 02-24-2015 03:27 AM
    • Replies: 0
    • Views: 1,355
    02-24-2015, 03:27 AM Go to last post
  58. [help] Reporting Fisher r to z

    How to report Fisher r to z in APA format? I used the online calculator to calculate the z.......but I am not sure how to report it in my paper.

    Started by heidi‎, 02-20-2015 01:46 AM
    • Replies: 0
    • Views: 1,381
    02-20-2015, 01:46 AM Go to last post
  59. Not Sure How to Start

    I'm taking an online course, have read through the textbook, gone through the PowerPoint notes, tried looking this up elsewhere online, consulted...

    Started by colsam‎, 02-19-2015 02:49 PM
    • Replies: 2
    • Views: 988
    02-19-2015, 11:44 PM Go to last post
  60. Question pre- and post-test analysis: multiple comparison problem? can someone help me out?

    Dear all, I am doing research about a cognitive training program. I am curious to know how to analyse if the difference between the pre and the...

    Started by maart91‎, 02-16-2015 08:32 AM
    • Replies: 0
    • Views: 789
    02-16-2015, 08:32 AM Go to last post

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