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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: 21,875
    11-10-2005, 12:21 AM Go to last post
  1. Trouble Transforming Data to Normality

    Hi All, I am trying to transform a variable to normality, but it does not seem to take! Below is the distribution: Clearly there is a...

    Started by herwitz‎, 05-15-2014 12:47 PM
    2 Pages
    1 2
    • Replies: 18
    • Views: 1,744
    05-16-2014, 04:30 AM Go to last post
  2. Pretest - posttest analysis question

    I am assessing the learning outcomes for a psychology course using a 10-question multiple choice pretest and, later, the same 10 questions as a...

    Started by Sherrington‎, 05-15-2014 01:28 AM
    • Replies: 4
    • Views: 659
    05-15-2014, 08:36 PM Go to last post
  3. Repeated measures - correlation

    Hi, I've conducted a study in which my participants undergo 4 different manipulations (within-subjects): a negative mood, a positive mood, food...

    Started by Pebbles84‎, 05-09-2014 04:20 AM
    • Replies: 1
    • Views: 581
    05-14-2014, 10:00 AM Go to last post
  4. Cluster Analysis, Discriminant Analysis and Multinomial Logistic Regression - Help!

    Hi Everyone, I am having some serious problems with my analyses and was hoping someone might be able to help me out! I have a sample of 95...

    Started by mlb‎, 05-14-2014 09:35 AM
    cluster analysis, discriminant analysis, regression
    • Replies: 1
    • Views: 745
    05-14-2014, 09:58 AM Go to last post
  5. Question Within-subjects Error Bars and Normalization?

    Hello, I need to calculate within-subjects error bars to create a graph for my data but I'm having a hard time wrapping my head around how to do...

    Started by kw1130‎, 05-13-2014 02:34 PM
    • Replies: 0
    • Views: 1,593
    05-13-2014, 02:34 PM Go to last post
  6. ANOVA planned contrasts

    Dear TalkStats community, Previously a website (http://www4.uwsp.edu/psych/cw/statmanual/plancomp.html) was recommended to me on ANOVA and planned...

    Started by quert‎, 05-12-2014 11:57 AM
    anova, planned contrast
    • Replies: 0
    • Views: 577
    05-12-2014, 11:57 AM Go to last post
  7. Alternatives for logistic regression?

    Hey everyone! I need some help because I am not really happy with the data analysis for my thesis. I am investigating the prognostic power of...

    Started by Matte‎, 05-11-2014 10:23 AM
    chi-square test, logistic regression, prediction
    • Replies: 0
    • Views: 465
    05-11-2014, 10:23 AM Go to last post
  8. Resolving recoding issues for variables across time and space for a larger dataset

    For the paper I am working on I am claiming that as protester 'powerlessness' increases so does the likelihood of the protester selecting a...

    Started by ndo03001‎, 05-08-2014 10:58 PM
    • Replies: 0
    • Views: 441
    05-08-2014, 10:58 PM Go to last post
  9. Mediation/Moderation, entrepreneurship, health and work satisfaction

    Hi people! I'm currently working on my thesis in organizational psychology, and I could really use some help in the SPSS analysis. My thesis is...

    Started by Scotty‎, 05-02-2014 09:50 AM
    • Replies: 4
    • Views: 824
    05-07-2014, 07:38 AM Go to last post
  10. Analyzing Group Differences -ANOVA with a non-continuous DV?

    Hello All, I want to analyze group differences among 4 different levels of an IV with one DV. The issue is, when I created the survey the item I...

    Started by ColdPillow‎, 04-30-2014 10:32 AM
    • Replies: 3
    • Views: 815
    05-06-2014, 09:16 AM Go to last post
  11. Case Studies of Hypothesis Testing

    Can anyone help me out here? I am totally lost! You are running a series of statistical tests in SPSS using the “standard” criterion for rejecting...

    Started by amhcmh‎, 05-03-2014 03:51 PM
    • Replies: 3
    • Views: 1,048
    05-05-2014, 05:45 AM Go to last post
  12. Cross-Level Moderation

    Hi everyone, for my master thesis I have to carry out an analysis where both the IV and DV are on the team level while the hypothesized moderator...

    Started by LetsTalkStats‎, 05-05-2014 04:40 AM
    cross-level moderation, lower level moderator
    • Replies: 0
    • Views: 408
    05-05-2014, 04:40 AM Go to last post
  13. Counterbalancing Booboo

    Hello, Being a novice researcher, I completely neglected to do a very basic procedure for a brief measure which I created: counterbalancing its...

    Started by herwitz‎, 05-01-2014 07:19 PM
    • Replies: 3
    • Views: 718
    05-04-2014, 08:44 PM Go to last post
  14. Question More help please! I'm almost there!

    Question 10 You are running a series of statistical tests in SPSS using the “standard” criterion for rejecting a null hypothesis. You obtain the...

    Started by amhcmh‎, 05-03-2014 08:41 PM
    • Replies: 2
    • Views: 2,336
    05-03-2014, 10:24 PM Go to last post
  15. Help with understanding CFA...

    I hope someone can give me some pointers here... Or just point out to my muddled mind the porobably obvious things I am missing! I am running an...

    Started by Vicugna‎, 05-01-2014 07:01 PM
    amos, cfa, questionnaire, sem
    • Replies: 1
    • Views: 477
    05-01-2014, 07:31 PM Go to last post
  16. Extended moderated mediation [Path analysis]

    Hello all, I'm analyzing a data set collected for a psychology study, and have a question about a path analysis (i.e., structural equation...

    Started by kkim‎, 05-01-2014 12:31 PM
    • Replies: 0
    • Views: 645
    05-01-2014, 12:31 PM Go to last post
  17. ANOVA, the correct choice?

    Hello. I am new to statistics but have (in the last weeks) been working through an online course to try to teach myself the basics. I am doing a...

    Started by Tig‎, 04-29-2014 11:28 AM
    • Replies: 7
    • Views: 710
    05-01-2014, 11:29 AM Go to last post
  18. Help with confidence interval and interpreting data!?

    Someone please please help me make sense of these stats! I really need help with interpreting outcome of studies! How do i calculate CIs (no need to...

    Started by OscarDaGrouch‎, 04-29-2014 04:58 PM
    confidence intervals, odds ratio., statistics
    • Replies: 1
    • Views: 441
    04-30-2014, 04:32 AM Go to last post
  19. Red face Help with non normality distribution. Transformations didn't work. Help!

    Hi, new to this forum. I'm writing up my MsC in psychology and I've got problems with my data. The study involved administering questionnaires to...

    Started by martinaX‎, 04-29-2014 05:31 AM
    data analysis, non normal, non normal distribution, psychology
    • Replies: 7
    • Views: 662
    04-29-2014, 03:23 PM Go to last post
  20. 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 11:19 AM
    single subject design
    • Replies: 3
    • Views: 439
    04-29-2014, 02:01 PM Go to last post
  21. 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 11:49 AM
    cronbach's alpha, inter-rater reliability, intraclass correlation
    • Replies: 0
    • Views: 501
    04-29-2014, 11:49 AM Go to last post
  22. 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 11:41 AM
    mixed model, nominal variable, repeated measures, spss
    • Replies: 0
    • Views: 425
    04-29-2014, 11:41 AM Go to last post
  23. 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 08:27 AM
    kendall tau
    • Replies: 0
    • Views: 427
    04-29-2014, 08:27 AM Go to last post
  24. 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 06:16 AM
    • Replies: 0
    • Views: 479
    04-29-2014, 06:16 AM Go to last post
  25. 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, 04-29-2014 12:47 AM
    • Replies: 0
    • Views: 371
    04-29-2014, 12:47 AM Go to last post
  26. 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 02:24 AM
    correlation, hypotheses, hypothesis testing, pearson r, psychology experiment
    • Replies: 1
    • Views: 426
    04-26-2014, 03:22 AM Go to last post
  27. 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 09:50 PM
    • Replies: 5
    • Views: 775
    04-25-2014, 01:25 PM Go to last post
  28. 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 05:40 AM
    control variables, multiple regression, psychology statistics
    • Replies: 9
    • Views: 973
    04-25-2014, 05:56 AM Go to last post
  29. Power of a study using a 2 sample z-test?

    Solved using PASS.

    Started by rsoul‎, 04-25-2014 03:18 AM
    • Replies: 0
    • Views: 486
    04-25-2014, 03:18 AM Go to last post
  30. 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 04:41 AM
    • Replies: 2
    • Views: 681
    04-24-2014, 10:26 PM Go to last post
  31. 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 08:14 PM
    • Replies: 3
    • Views: 7,798
    04-24-2014, 07:46 PM Go to last post
  32. 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 02:28 PM
    fit statistics, sample weighting, sem, stata, survey data
    • Replies: 2
    • Views: 850
    04-24-2014, 05:25 PM Go to last post
  33. 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 06:45 AM
    • Replies: 1
    • Views: 646
    04-24-2014, 01:43 PM Go to last post
  34. 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 01:11 PM
    multiple conditions, multiplte dv's, repeated measures
    • Replies: 0
    • Views: 479
    04-24-2014, 01:11 PM Go to last post
  35. 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 10:58 AM
    • Replies: 0
    • Views: 491
    04-23-2014, 10:58 AM Go to last post
  36. 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, I’m not sure it is as easy as...

    Started by quert‎, 04-14-2014 09:07 AM
    • Replies: 3
    • Views: 990
    04-18-2014, 03:45 AM Go to last post
  37. 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 04:54 PM
    anova, mixed between anova, psychology, spss
    • Replies: 3
    • Views: 731
    04-17-2014, 12:21 AM Go to last post
  38. 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 01:40 AM
    logistic regression, outliers, proportion
    • Replies: 1
    • Views: 596
    04-16-2014, 11:19 PM Go to last post
  39. 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 09:50 PM
    • Replies: 0
    • Views: 671
    04-16-2014, 09:50 PM Go to last post
  40. 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 04:38 PM
    • Replies: 2
    • Views: 648
    04-16-2014, 05:24 PM Go to last post
  41. 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 12:00 PM
    • Replies: 5
    • Views: 678
    04-16-2014, 03:12 PM Go to last post
  42. 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 04:49 PM
    ancova, anova, design, group comparison, pre post test analysis
    • Replies: 2
    • Views: 839
    04-16-2014, 11:37 AM Go to last post
  43. 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 05:07 AM
    • Replies: 1
    • Views: 760
    04-16-2014, 08:43 AM Go to last post
  44. 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 05:50 PM
    • Replies: 1
    • Views: 530
    04-16-2014, 03:33 AM Go to last post
  45. 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 09:22 AM
    • Replies: 6
    • Views: 721
    04-14-2014, 03:06 PM Go to last post
  46. 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 09:58 AM
    • Replies: 2
    • Views: 880
    04-14-2014, 08:50 AM Go to last post
  47. Question Comparing proportions from the (somewhat) same sample

    Hi everybody, I’m 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 12:50 PM
    mcnemar, proportions, z test
    • Replies: 0
    • Views: 937
    04-11-2014, 12:50 PM Go to last post
  48. 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 09:05 AM
    • Replies: 3
    • Views: 631
    04-10-2014, 11:43 AM Go to last post
  49. Reference values for ICC (Intraclass Correlation Coefficient)

    Hello everyone, I have a question about the IC, that I haven’t been able to find the answer to yet: are there any reference values as to what...

    Started by SCross‎, 04-09-2014 04:14 PM
    • Replies: 1
    • Views: 1,565
    04-09-2014, 05:11 PM Go to last post
  50. 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 12:02 PM
    • Replies: 1
    • Views: 583
    04-08-2014, 01:04 PM Go to last post
  51. 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 02:38 PM
    chi squared, contingency tables, fisher's exact test, odds ratio, post-hoc
    • Replies: 0
    • Views: 825
    04-04-2014, 02:38 PM Go to last post
  52. 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 08:48 AM
    • Replies: 0
    • Views: 905
    04-02-2014, 08:48 AM Go to last post
  53. 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 03:49 AM
    #pvalue #correlation
    • Replies: 5
    • Views: 1,207
    04-01-2014, 10:47 PM Go to last post
  54. 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 10:11 PM
    inferential, interpretation, linear regression, r-squared, strength of prediction
    • Replies: 3
    • Views: 1,169
    04-01-2014, 05:40 PM Go to last post
  55. 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 02:50 AM
    • Replies: 3
    • Views: 1,640
    04-01-2014, 05:36 AM Go to last post
  56. 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 04:55 AM
    • Replies: 3
    • Views: 502
    03-31-2014, 11:51 AM Go to last post
  57. 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 01:19 AM
    • Replies: 0
    • Views: 404
    03-28-2014, 01:19 AM Go to last post
  58. 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 07:10 AM
    experiment analysis, experiment design, skew
    • Replies: 7
    • Views: 843
    03-25-2014, 07:27 PM Go to last post
  59. 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 04:35 PM
    • Replies: 0
    • Views: 588
    03-25-2014, 04:35 PM Go to last post
  60. 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 10:49 AM
    • Replies: 3
    • Views: 523
    03-25-2014, 04:24 AM Go to last post

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