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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: 14,551
    11-09-2005, 11:21 PM Go to last post
  1. 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, Yesterday 03:09 PM
    • Replies: 0
    • Views: 49
    Yesterday, 03:09 PM Go to last post
  2. 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: 88
    04-24-2015, 09:43 AM Go to last post
  3. 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: 0
    • Views: 84
    04-24-2015, 05:15 AM Go to last post
  4. 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: 70
    04-23-2015, 11:53 PM Go to last post
  5. 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: 186
    04-22-2015, 03:35 PM Go to last post
  6. 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: 162
    04-21-2015, 07:46 AM Go to last post
  7. 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: 81
    04-20-2015, 05:00 AM Go to last post
  8. 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: 235
    04-17-2015, 08:19 PM Go to last post
  9. 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: 218
    04-15-2015, 06:43 AM Go to last post
  10. 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: 263
    04-14-2015, 07:29 AM Go to last post
  11. 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: 122
    04-14-2015, 04:49 AM Go to last post
  12. 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: 171
    04-14-2015, 02:25 AM Go to last post
  13. 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: 121
    04-13-2015, 12:45 PM Go to last post
  14. 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: 233
    04-10-2015, 07:45 AM Go to last post
  15. How can I examine whether two lists are significantly different?

    deleted post

    Started by coffeee‎, 04-09-2015 07:26 AM
    • Replies: 0
    • Views: 163
    04-09-2015, 07:26 AM Go to last post
  16. 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: 268
    04-08-2015, 11:58 PM Go to last post
  17. 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: 155
    04-08-2015, 02:36 PM Go to last post
  18. 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: 114
    04-08-2015, 02:18 PM Go to last post
  19. 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: 162
    04-07-2015, 07:02 AM Go to last post
  20. 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: 173
    04-06-2015, 01:54 PM Go to last post
  21. 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: 218
    04-06-2015, 02:12 AM Go to last post
  22. 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: 238
    04-05-2015, 08:13 AM Go to last post
  23. 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: 177
    04-05-2015, 03:15 AM Go to last post
  24. 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: 196
    04-04-2015, 06:08 AM Go to last post
  25. 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: 132
    04-03-2015, 03:51 PM Go to last post
  26. 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: 195
    03-31-2015, 11:24 AM Go to last post
  27. 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: 149
    03-31-2015, 09:55 AM Go to last post
  28. 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: 378
    03-30-2015, 09:19 AM Go to last post
  29. 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: 148
    03-30-2015, 07:23 AM Go to last post
  30. 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: 196
    03-26-2015, 03:40 PM Go to last post
  31. 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: 351
    03-26-2015, 06:24 AM Go to last post
  32. 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: 162
    03-25-2015, 01:26 PM Go to last post
  33. 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: 297
    03-24-2015, 03:48 AM Go to last post
  34. 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: 401
    03-22-2015, 07:35 PM Go to last post
  35. 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: 211
    03-22-2015, 03:47 AM Go to last post
  36. 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: 429
    03-17-2015, 12:39 PM Go to last post
  37. 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: 358
    03-16-2015, 07:48 PM Go to last post
  38. 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: 358
    03-16-2015, 08:13 AM Go to last post
  39. 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: 256
    03-12-2015, 02:15 AM Go to last post
  40. 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: 229
    03-11-2015, 07:17 AM Go to last post
  41. 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: 408
    03-10-2015, 04:03 PM Go to last post
  42. 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: 319
    03-06-2015, 02:10 PM Go to last post
  43. 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 12:47 PM
    • Replies: 0
    • Views: 220
    03-02-2015, 12:47 PM Go to last post
  44. 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 09:09 AM
    mediation. spss.
    • Replies: 1
    • Views: 304
    02-27-2015, 12:13 PM Go to last post
  45. 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 08:06 PM
    • Replies: 2
    • Views: 284
    02-25-2015, 05:48 PM Go to last post
  46. 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 02:27 AM
    • Replies: 0
    • Views: 222
    02-24-2015, 02:27 AM Go to last post
  47. [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 12:46 AM
    • Replies: 0
    • Views: 284
    02-20-2015, 12:46 AM Go to last post
  48. 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 01:49 PM
    • Replies: 2
    • Views: 279
    02-19-2015, 10:44 PM Go to last post
  49. 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 07:32 AM
    • Replies: 0
    • Views: 325
    02-16-2015, 07:32 AM Go to last post
  50. goal: why cumulative % exceeds 1 when I do principal axis factoring in STATA

    Hi, I surfed the net only to find reasons why it could exceed 1 if I use ipf or pf rotation for exploratory factory analysis. How about principal...

    Started by talkstats_user‎, 02-15-2015 07:57 AM
    • Replies: 0
    • Views: 223
    02-15-2015, 07:57 AM Go to last post
  51. Need help with an assignment for stats class: reading Two Factor ANOVA tables

    Hello, first I suck at statistics and have fallen behind a bit in my class and have a lot of very obvious questions to ask. This is probably one of...

    Started by Rodgelinkbot‎, 02-13-2015 10:29 PM
    • Replies: 2
    • Views: 322
    02-14-2015, 04:38 PM Go to last post
  52. Need help selecting the appropriate test!

    Hello all, I'm trying to determine if gender has an influence in 1. Qualifying for a competition (3 finalists) and 2. winning a competition (New...

    Started by Srab‎, 02-13-2015 10:35 AM
    • Replies: 0
    • Views: 243
    02-13-2015, 10:35 AM Go to last post
  53. comparing means of aggregate data

    Dear community, We recently administered a test with 30 multiple choice questions to a sample of freshmen at our college. I also received the...

    Started by EffectSize‎, 02-13-2015 09:25 AM
    • Replies: 0
    • Views: 249
    02-13-2015, 09:25 AM Go to last post
  54. Experimental design question

    I am struggling with the complexity of my experimental design... I apologize in advance for any incorrect terminology or grammar. I know that I...

    Started by belench19‎, 02-05-2015 09:15 PM
    blocking, experimental design, factorial design, nesting, split plot
    • Replies: 7
    • Views: 458
    02-12-2015, 02:08 PM Go to last post
  55. Grouped continuous variables in descriptives

    Hi, I am conducting a study in which I have measured stress (lowest score 1, highest 5 - Likert) and several other variables such as age,...

    Started by funnyman‎, 02-06-2015 12:04 PM
    • Replies: 3
    • Views: 315
    02-12-2015, 11:02 AM Go to last post
  56. choose a test for 4 independent variables research

    Hi, I conducdt a small research with 4 categorial independents variables and 1 ratio sependent variable. i intrested to find out about each...

    Started by natan1‎, 02-09-2015 10:34 AM
    • Replies: 8
    • Views: 390
    02-10-2015, 12:47 PM Go to last post
  57. linearity assumption HELP

    Hi, I am horrible with interpreting scatter plots and actually have a little argument with a friend over linearity of relationship between...

    Started by stell93‎, 02-09-2015 05:51 PM
    • Replies: 2
    • Views: 281
    02-10-2015, 04:44 AM Go to last post
  58. analysing cognitive rehabilitation and controlling for spontaneous recovery(SEM)

    Dear all, When trying to figure out the proportion of explained variance of a cognitive rehabilitation program for stroke patients, you have to...

    Started by maart91‎, 02-10-2015 03:46 AM
    control variable, sample groups, sem
    • Replies: 0
    • Views: 142
    02-10-2015, 03:46 AM Go to last post
  59. [R - "interval range"] - how to analyse a self-applied range?

    I am conducting a experiment in the form of a survey where I test the effect of three different framings on the same subject (data collecting has not...

    Started by hotjer‎, 02-09-2015 05:20 PM
    • Replies: 0
    • Views: 201
    02-09-2015, 05:20 PM Go to last post
  60. Violation of Homogeneity of Variance

    I'm using SPSS to test whether my two groups (HCs and Offspring) have a difference in the number of errors comitted on a psych measure. Total sample...

    Started by Shayshu‎, 02-05-2015 06:30 PM
    • Replies: 7
    • Views: 430
    02-09-2015, 05:00 PM Go to last post

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