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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: 30,061
    11-10-2005, 12:21 AM Go to last post
  1. Single Subject Design

    My supervisor has asked about single subject designs in educational settings. I'd never heard of them and wanted to get people's thoughts...

    Started by trinker‎, 04-29-2014 10:19 AM
    single subject design
    • Replies: 3
    • Views: 1,061
    04-29-2014, 01:01 PM Go to last post
  2. Comparing Cronbach's alpha intraclass correlations with varying rater permutations

    I've done a study for my PhD comparing different methods/conditions that might affect inter-rater agreement when rating the creativity of other...

    Started by gurgaveed‎, 04-29-2014 10:49 AM
    cronbach's alpha, inter-rater reliability, intraclass correlation
    • Replies: 0
    • Views: 1,582
    04-29-2014, 10:49 AM Go to last post
  3. Mixed model, repeated measures, manova, nested? nominal

    Hi. I am not sure how to approach the statistical analysis of the following study. Any insights would be greatly appreciated. Thanks! So, I...

    Started by Joan.m‎, 04-29-2014 10:41 AM
    mixed model, nominal variable, repeated measures, spss
    • Replies: 0
    • Views: 934
    04-29-2014, 10:41 AM Go to last post
  4. Comparing mother child responses to the same questionnaire- Kendalll Tau Correlation?

    Hi all, hope you can help me out here. I'm looking at perceptions of risk to the school journey on a simple Likert scale questionnaire, so ordinal...

    Started by fionacampbell22‎, 04-29-2014 07:27 AM
    kendall tau
    • Replies: 0
    • Views: 800
    04-29-2014, 07:27 AM Go to last post
  5. Talking Calculating and Comparing the Rate of Change Across Different Data Sets

    Hi all, I'm currently trying to analyze some behaviour data and I need some advice on how to do it properly. The experimental setup is like this:...

    Started by glowfish‎, 04-29-2014 05:16 AM
    • Replies: 0
    • Views: 719
    04-29-2014, 05:16 AM Go to last post
  6. How do you work out a sample size for a factor analysis that has 2 variables

    How do you work out a sample size for a factor analysis that has 2 variables?

    Started by jj4000‎, 04-28-2014 11:47 PM
    • Replies: 0
    • Views: 940
    04-28-2014, 11:47 PM Go to last post
  7. Correlation Hypotheses (Pearsons) - Is a Null Hypothesis necessary?!

    Hi :) I'm quite confused on whether it is possible predicting 3 positive correlations? Or is it necessary that there should be a null? For...

    Started by Sarsoorah!‎, 04-26-2014 01:24 AM
    correlation, hypotheses, hypothesis testing, pearson r, psychology experiment
    • Replies: 1
    • Views: 1,006
    04-26-2014, 02:22 AM Go to last post
  8. Behavioural Data Blues: Repeated measures, trichotomous proportion data

    Hello, I am a biologist trying to sort through some behavioural data. I am not sure how to proceed with my repeated measures proportional data. I...

    Started by Fish1‎, 04-23-2014 08:50 PM
    • Replies: 5
    • Views: 1,272
    04-25-2014, 12:25 PM Go to last post
  9. Multiple Regression Analysis including Control Variables

    Hi Everyone, Currently I'm working on my masterthesis for which I created a model which was approved by the University. I decided that I want to...

    Started by bepaaldiemand‎, 04-09-2014 04:40 AM
    control variables, multiple regression, psychology statistics
    • Replies: 9
    • Views: 1,557
    04-25-2014, 04:56 AM Go to last post
  10. Power of a study using a 2 sample z-test?

    Solved using PASS.

    Started by rsoul‎, 04-25-2014 02:18 AM
    • Replies: 0
    • Views: 869
    04-25-2014, 02:18 AM Go to last post
  11. Simple Modell explained? (with picture)

    Hi, I am writing my BA about Sportspsychology. This model is important fpr my thesis, but I can't "read" it proper. Model:...

    Started by MrPeer‎, 04-24-2014 03:41 AM
    • Replies: 2
    • Views: 1,755
    04-24-2014, 09:26 PM Go to last post
  12. Question Reporting Non-Parametric Data: Median or Mean (or both)?

    At the most simple level, my question is which descriptive statistics are the most kosher for reporting when using nonparametric tests like...

    Started by metageek‎, 04-23-2014 07:14 PM
    • Replies: 3
    • Views: 14,056
    04-24-2014, 06:46 PM Go to last post
  13. Question SEM using survey data and maximum likelihood estimation - fit statistics?

    I have estimated an SEM model in STATA based on survey data. Once I identify the data as survey by including sample weight and bootstrap weight...

    Started by amsavage‎, 04-24-2014 01:28 PM
    fit statistics, sample weighting, sem, stata, survey data
    • Replies: 2
    • Views: 1,442
    04-24-2014, 04:25 PM Go to last post
  14. Testing discriminant validity in a satisfaction questionnaire

    Hello, I have a Likert scale questionnaire rating patient satisfaction with care (1 = strongly agree, 2= agree, 3 = disagree, 4 = strongly...

    Started by catkin‎, 04-17-2014 05:45 AM
    • Replies: 1
    • Views: 899
    04-24-2014, 12:43 PM Go to last post
  15. Smile repeated measures, 3 conditions and multiple DV's in each of the conditions

    Our experiment design is kind of complex: 35 participants, stimuli were approaching cones that disappeared at different distances (conditions:...

    Started by Kyana‎, 04-24-2014 12:11 PM
    multiple conditions, multiplte dv's, repeated measures
    • Replies: 0
    • Views: 1,033
    04-24-2014, 12:11 PM Go to last post
  16. Help with post hoc testing

    I am writing a results section and I am new to it. I think I may have the first half of the results okay but I am not sure how to form the post hoc...

    Started by stat_student1125‎, 04-23-2014 09:58 AM
    • Replies: 0
    • Views: 1,108
    04-23-2014, 09:58 AM Go to last post
  17. Comparing non-independent variables

    Dear TalkStats community, I would like to ask for your help in a problem that seemed very easy at first sight. Now, Iím not sure it is as easy as...

    Started by quert‎, 04-14-2014 08:07 AM
    • Replies: 3
    • Views: 1,729
    04-18-2014, 02:45 AM Go to last post
  18. Help with mixed between within subjects ANOVA

    I've recently performed a mixed between within subjects ANOVA. I have the results for the two main effects as well as the interaction effect. The...

    Started by hsbrook‎, 04-04-2014 03:54 PM
    anova, mixed between anova, psychology, spss
    • Replies: 3
    • Views: 1,592
    04-16-2014, 11:21 PM Go to last post
  19. Assessing outliers in a proportion

    Hi all, Just wondering how one would assess outliers in the following: At the start of a two week period, people were asked to nominate a...

    Started by gdbasketcase1992‎, 04-12-2014 12:40 AM
    logistic regression, outliers, proportion
    • Replies: 1
    • Views: 1,482
    04-16-2014, 10:19 PM Go to last post
  20. Question Finding the average sex ratio - odds ratio or relative risk? Stumped :(

    Hi there. I'm looking at data on the sex ratios of males to females reaching a particular milestone (eg 90th percentile, 95th, 99th, etc), which is a...

    Started by reillyd‎, 04-16-2014 08:50 PM
    • Replies: 0
    • Views: 1,971
    04-16-2014, 08:50 PM Go to last post
  21. help with contrasts - repeated measures anova in spss

    Hi. I have done a repeated measures anova with the independent variable "condition", 6 conditions. I'm using SPSS The anova works fine, the...

    Started by esco‎, 04-14-2014 03:38 PM
    • Replies: 2
    • Views: 1,649
    04-16-2014, 04:24 PM Go to last post
  22. Unhappy Someone please help me with these hypothesis testing questiong!!!

    Hi Everyone, I've got an extra credit for my statistic for social science/psychology, and I've barely hitting the mark to get a pass. So I was...

    Started by Wilsonwhite1992‎, 04-16-2014 11:00 AM
    • Replies: 5
    • Views: 1,137
    04-16-2014, 02:12 PM Go to last post
  23. Non-Equivalent Group Statistical Analyses - is ANOVA appropriate?

    Hi there, I have pre/post data on the same tool for two different populations (Group A: Higher needs, Group B: Lower needs) and two different...

    Started by Serina001‎, 04-15-2014 03:49 PM
    ancova, anova, design, group comparison, pre post test analysis
    • Replies: 2
    • Views: 1,297
    04-16-2014, 10:37 AM Go to last post
  24. Measuring Relationships between Motivators for Exercise and Mental Well-Being

    Hi there. For this study as the title says I'm looking for a relationship between mental well-being and three different motivators for exercise. ...

    Started by nickm926‎, 04-16-2014 04:07 AM
    • Replies: 1
    • Views: 1,380
    04-16-2014, 07:43 AM Go to last post
  25. Need Some Help On How To Set Up My Data To Run Tests In SPSS

    I'm doing an experimental design for a class where we have to run a mock experiment. Mine follow's Alinda Friedman's work on Expected VS Unexpected...

    Started by kaysies‎, 04-15-2014 04:50 PM
    • Replies: 1
    • Views: 975
    04-16-2014, 02:33 AM Go to last post
  26. Zero scores in correlation analysis

    Hi, I conducted a study looking at the effects of breakfast size on mood and appetite. 45 participants recorded how much they ate for...

    Started by Rach3385‎, 04-14-2014 08:22 AM
    • Replies: 6
    • Views: 1,267
    04-14-2014, 02:06 PM Go to last post
  27. Unhappy Paired Sample t-tests do not link up with the Repeated-Measures ANOVA

    Hello, I'm currently writing up my results section for my dissertation that's looking at the nocebo effect. I'm using a repeated-measures ANOVA...

    Started by Znahouli1‎, 04-13-2014 08:58 AM
    • Replies: 2
    • Views: 1,696
    04-14-2014, 07:50 AM Go to last post
  28. Question Comparing proportions from the (somewhat) same sample

    Hi everybody, Iím looking for some help on testing whether there are statistical differences between proportions when the data is dependent. By...

    Started by SimonSchus‎, 04-11-2014 11:50 AM
    mcnemar, proportions, z test
    • Replies: 0
    • Views: 2,419
    04-11-2014, 11:50 AM Go to last post
  29. What are some good proxies to use for social status/ability?

    What are some good proxies to use for social status/social ability if you don't have specific variables for these in your data? Thanks.

    Started by dataset‎, 04-10-2014 08:05 AM
    • Replies: 3
    • Views: 1,636
    04-10-2014, 10:43 AM Go to last post
  30. Reference values for ICC (Intraclass Correlation Coefficient)

    Hello everyone, I have a question about the IC, that I havenít been able to find the answer to yet: are there any reference values as to what...

    Started by SCross‎, 04-09-2014 03:14 PM
    • Replies: 1
    • Views: 2,611
    04-09-2014, 04:11 PM Go to last post
  31. Log linear analysis with cross-tabs- association/ interaction?

    I was wondering if anyone could tell me if there is a difference between an interaction and an association? I have recently carried out a log linear...

    Started by Natalie90‎, 04-08-2014 11:02 AM
    • Replies: 1
    • Views: 1,223
    04-08-2014, 12:04 PM Go to last post
  32. Analysis and Post-hoc for Ordinal Variables

    My main questions are; 1) For a Chi goodness of fit test, which effect size do you use? I am being told Cramer's V, Phi, Omega and W! (There seem...

    Started by nylon88‎, 04-04-2014 01:38 PM
    chi squared, contingency tables, fisher's exact test, odds ratio, post-hoc
    • Replies: 0
    • Views: 1,890
    04-04-2014, 01:38 PM Go to last post
  33. Help reading SPSS Data for Psychological Study

    I'm doing a study on the Internet versus our memory and the confidence that we have in our memory. I'm having students read a passage and take a...

    Started by Samuraiedge‎, 04-02-2014 07:48 AM
    • Replies: 0
    • Views: 1,367
    04-02-2014, 07:48 AM Go to last post
  34. How to calculate relative size of obtained p value

    My question is: The obtained p value for a correlation is .041, for a sample size of n=75. The same kind of correlational analysis using the same...

    Started by scout‎, 04-01-2014 02:49 AM
    #pvalue #correlation
    • Replies: 5
    • Views: 2,399
    04-01-2014, 09:47 PM Go to last post
  35. Interpreting strength of prediction re: R2

    Hi there, I was looking for some clarification regarding how to calculate/write up a full inferential interpretation of a linear regression model's...

    Started by elmay‎, 03-31-2014 09:11 PM
    inferential, interpretation, linear regression, r-squared, strength of prediction
    • Replies: 3
    • Views: 2,023
    04-01-2014, 04:40 PM Go to last post
  36. Correct interpretation of strength of prediction in terms of Multiple R?

    Hi there, Wondering if someone could tell me if this is a sound interpretation of strength of prediction of the linear regression model in terms...

    Started by Maybel‎, 04-14-2013 01:50 AM
    • Replies: 3
    • Views: 2,492
    04-01-2014, 04:36 AM Go to last post
  37. Ranking means taking into consideration SD (or SE)

    Hi everyone, I have a question about how to rank means taking into consideration SD (or better yet SE). Here's the situation (simplified): ...

    Started by SCross‎, 03-31-2014 03:55 AM
    • Replies: 3
    • Views: 945
    03-31-2014, 10:51 AM Go to last post
  38. Hi

    Hi, Am facing a problem in analysis. Hope anyone can help. I have a two of words- one belongs to BB and another to LB. I have analyzed the...

    Started by ABI‎, 03-28-2014 12:19 AM
    • Replies: 0
    • Views: 981
    03-28-2014, 12:19 AM Go to last post
  39. Conceptual Question: Experiment where you analyze different skew between conditions.

    Hi all, I had a psychology stats exam yesterday and one question was: 'Present a hypothetical experimental question in which the main interest...

    Started by gdbasketcase1992‎, 03-22-2014 06:10 AM
    experiment analysis, experiment design, skew
    • Replies: 7
    • Views: 1,532
    03-25-2014, 06:27 PM Go to last post
  40. Question Choosing the correct analysis: repeated measures with dichotomous DV

    I am trying to analyze some repeated measures data with a dichotomous dependent variable. My design is as such: 16 participants viewed three sets of...

    Started by kw1130‎, 03-25-2014 03:35 PM
    • Replies: 0
    • Views: 1,192
    03-25-2014, 03:35 PM Go to last post
  41. Statiscally comparing correlations?

    How can I statically compare an uncorrected correlation between A and B, and a corrected (C) correlation between A and B? Taking into account that A...

    Started by EllenJanssen‎, 03-24-2014 09:49 AM
    • Replies: 3
    • Views: 1,818
    03-25-2014, 03:24 AM Go to last post
  42. What test would you use?

    Hi all, I was wondering what tests you would use on these figures, I've already done my analysis but was wondering if there's anything better out...

    Started by QueenOfStats‎, 03-23-2014 09:01 AM
    • Replies: 1
    • Views: 1,001
    03-24-2014, 10:59 PM Go to last post
  43. Significance and Discriminant Function Analysis

    Hi, If I have specific a-priori assumptions to test with a DFA does this lessen the need for the Wilks Lambda ouput being significant? Thanks...

    Started by baddeleywm‎, 03-24-2014 11:30 AM
    • Replies: 0
    • Views: 1,012
    03-24-2014, 11:30 AM Go to last post
  44. repeated measures ANOVA with quadratic covariate??

    Hi, I have some data that I am struggling to analyse. Any advice would be much appreciated. My DV is a repeated measure with two levels (test...

    Started by achan‎, 03-24-2014 05:56 AM
    • Replies: 0
    • Views: 1,877
    03-24-2014, 05:56 AM Go to last post
  45. Mauchly's Test Output

    (All participants participated in two trials, with three conditions in each trial.. Each participants' accuracy and reaction time was measured for...

    Started by Sarika‎, 03-23-2014 07:39 AM
    • Replies: 0
    • Views: 797
    03-23-2014, 07:39 AM Go to last post
  46. ANOVA for a partitioned sample

    Hello, I'm a bit new to statistics and I'm currently analysing the results of an experiment and not sure how to proceed... So first a small...

    Started by masch‎, 03-21-2014 04:32 AM
    • Replies: 2
    • Views: 1,320
    03-21-2014, 10:15 AM Go to last post
  47. Comparing 2 effects simultaneously - which test to use?

    Hi, I am conducting research on the effects of time-of-day and sleep on memory on rats. There are 2 groups: one group that sleeps between memory...

    Started by luako‎, 03-18-2014 10:52 AM
    • Replies: 3
    • Views: 1,092
    03-20-2014, 11:02 AM Go to last post
  48. Roy Bargmann Stepdown Analysis

    Hi, I am presently trying to run the Roy bargmann Stepdown Analysis with the following code: DATASET ACTIVATE DataSet1. MANOVA...

    Started by baddeleywm‎, 03-20-2014 07:17 AM
    • Replies: 0
    • Views: 3,104
    03-20-2014, 07:17 AM Go to last post
  49. To transform or not to transform?

    Hi, I'm currently working on the effect of video games and music on aggressive behaviour. The independent variables are type of game (FPS/Puzzle) and...

    Started by Kakazam‎, 03-18-2014 12:36 PM
    • Replies: 11
    • Views: 1,872
    03-20-2014, 06:49 AM Go to last post
  50. Help- SPSS non significant two way ANOVA

    Hi, Thankyou in advance for reading my post. I am currently doing a two way anova for the effect of (gender) and (physically active or not),...

    Started by clh2‎, 03-19-2014 08:38 AM
    • Replies: 4
    • Views: 1,824
    03-19-2014, 09:04 AM Go to last post
  51. MANOVA help please

    I was wondering if anyone can help, I have completed a MANOVA for my psychology dissertation however the assumption of Multicollinearity and...

    Started by missgjb‎, 03-19-2014 05:47 AM
    • Replies: 0
    • Views: 1,017
    03-19-2014, 05:47 AM Go to last post
  52. need help in my psychological research

    Hi. I am student from Slovakia. Sorry, my english is not good. I need help with my research. I am doing research, where i compare symptoms (in...

    Started by Taini‎, 03-18-2014 01:41 PM
    • Replies: 4
    • Views: 1,085
    03-19-2014, 03:43 AM Go to last post
  53. PEAS help, deciding whether my data is normal and then which test to use

    Hi, I am currently doing my dissertation. My supervisor has said to me that I can choose whether to ignore non-normal data or not. However I am...

    Started by fellis‎, 03-17-2014 06:56 AM
    • Replies: 7
    • Views: 1,986
    03-18-2014, 11:19 AM Go to last post
  54. Help with multiple covariates and moderators in analyses

    Hi all, I am trying to figure out the appropriate analyses for a project and I am hitting a bit of a wall. My primary question involves whether...

    Started by spiritcaravan‎, 03-17-2014 02:11 PM
    • Replies: 0
    • Views: 826
    03-17-2014, 02:11 PM Go to last post
  55. Question Need data analysis direction.

    Iím a grad student (clinical psychology) and research neophyte and need some direction. Once I gain statistical ground I would be more than happy to...

    Started by Neophyte5‎, 03-16-2014 07:35 PM
    data analysis, psychology, quasi-experimental
    • Replies: 0
    • Views: 833
    03-16-2014, 07:35 PM Go to last post
  56. Non-parametric data analysis - 2 questions

    I have 1 independent variable with 3 levels and four dependent continuous variables The four dependent variables within the levels of the IV...

    Started by hannou‎, 03-16-2014 01:53 PM
    • Replies: 1
    • Views: 778
    03-16-2014, 03:29 PM Go to last post
  57. Analysis of linear regression

    Hi guys, I am working on my dissertation and I stuck on basics... Can you please remind me few things. I've done linear regression of...

    Started by aleksss‎, 03-16-2014 04:37 AM
    • Replies: 0
    • Views: 1,022
    03-16-2014, 04:37 AM Go to last post
  58. Please Point Me To Resources I Can Use To Interpret This Data

    Okay, So there's this forum devoted to a communication-based game that, in each game, divides players into two different groups. The groups...

    Started by Psyche‎, 03-16-2014 02:42 AM
    • Replies: 0
    • Views: 969
    03-16-2014, 02:42 AM Go to last post
  59. Which test of reliability to use?

    Hi, I am unsure of if I am to use different tests of reliability for different types of data sought by the same questionnaire, or if one test may...

    Started by Riley‎, 03-13-2014 11:49 AM
    cronbach's alpha, data type, reliability test
    • Replies: 1
    • Views: 1,196
    03-15-2014, 10:46 PM Go to last post
  60. What do I do once I have found an order effect in a within subjects design?

    I have found an order effect in my repeated measures design and am having difficulty figuring out how to run further analyses that control for the...

    Started by kjm8675‎, 02-22-2014 02:22 PM
    • Replies: 4
    • Views: 1,404
    03-12-2014, 08:07 PM Go to last post

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