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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: 26,069
    11-10-2005, 12:21 AM Go to last post
  1. Is it possible to correlate two latent variables in AMOSwhere one subsumes the other?

    Hi all, I suspect that you will think that this is a dumb question, but please bear with me: I am trying to correlate two latent variables using...

    Started by myautumn28‎, 05-21-2014 08:31 PM
    • Replies: 0
    • Views: 680
    05-21-2014, 08:31 PM Go to last post
  2. Significance changes when standardizing

    Hello guys, I ran some SEM analysis (with MPlus) which gives me some puzzling results: for some paths the significance level is highly different...

    Started by szidel‎, 05-19-2014 12:08 PM
    • Replies: 2
    • Views: 1,042
    05-19-2014, 01:53 PM Go to last post
  3. Modification Indices

    I am struggling with how to interpret some of the modification indices in AMOS SEM output and would appreciate any feedback you can offer! I have...

    Started by buntington‎, 05-17-2014 09:55 PM
    • Replies: 3
    • Views: 9,203
    05-18-2014, 04:09 PM Go to last post
  4. "contextual effect" vs. "compositional effect" in multilevel models

    Chatbox convo follows: 05/16 16:13 Jake: lazar / spunky: when people speak of "contextual effects" in the multilevel / ed psych literature, are...

    Started by Jake‎, 05-16-2014 05:43 PM
    • Replies: 2
    • Views: 5,584
    05-16-2014, 06:10 PM Go to last post
  5. Use factor weightings derived from previous work on new data?

    Hello all, I have tested people on a set of 12 cognitive tests that have been used in previous research (by other people, not me). In the previous...

    Started by jess13‎, 05-15-2014 10:55 AM
    • Replies: 6
    • Views: 962
    05-16-2014, 03:59 PM Go to last post
  6. 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 11:47 AM
    2 Pages
    1 2
    • Replies: 18
    • Views: 2,438
    05-16-2014, 03:30 AM Go to last post
  7. 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 12:28 AM
    • Replies: 4
    • Views: 943
    05-15-2014, 07:36 PM Go to last post
  8. 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 03:20 AM
    • Replies: 1
    • Views: 796
    05-14-2014, 09:00 AM Go to last post
  9. 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 08:35 AM
    cluster analysis, discriminant analysis, regression
    • Replies: 1
    • Views: 1,264
    05-14-2014, 08:58 AM Go to last post
  10. 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 01:34 PM
    • Replies: 0
    • Views: 2,369
    05-13-2014, 01:34 PM Go to last post
  11. 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 10:57 AM
    anova, planned contrast
    • Replies: 0
    • Views: 815
    05-12-2014, 10:57 AM Go to last post
  12. 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 09:23 AM
    chi-square test, logistic regression, prediction
    • Replies: 0
    • Views: 647
    05-11-2014, 09:23 AM Go to last post
  13. 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 09:58 PM
    • Replies: 0
    • Views: 610
    05-08-2014, 09:58 PM Go to last post
  14. 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 08:50 AM
    • Replies: 4
    • Views: 1,015
    05-07-2014, 06:38 AM Go to last post
  15. 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 09:32 AM
    • Replies: 3
    • Views: 1,092
    05-06-2014, 08:16 AM Go to last post
  16. 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 02:51 PM
    • Replies: 3
    • Views: 2,120
    05-05-2014, 04:45 AM Go to last post
  17. 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 03:40 AM
    cross-level moderation, lower level moderator
    • Replies: 0
    • Views: 776
    05-05-2014, 03:40 AM Go to last post
  18. 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 06:19 PM
    • Replies: 3
    • Views: 896
    05-04-2014, 07:44 PM Go to last post
  19. 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 07:41 PM
    • Replies: 2
    • Views: 3,971
    05-03-2014, 09:24 PM Go to last post
  20. 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 06:01 PM
    amos, cfa, questionnaire, sem
    • Replies: 1
    • Views: 668
    05-01-2014, 06:31 PM Go to last post
  21. 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 11:31 AM
    • Replies: 0
    • Views: 928
    05-01-2014, 11:31 AM Go to last post
  22. 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 10:28 AM
    • Replies: 7
    • Views: 905
    05-01-2014, 10:29 AM Go to last post
  23. 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 03:58 PM
    confidence intervals, odds ratio., statistics
    • Replies: 1
    • Views: 594
    04-30-2014, 03:32 AM Go to last post
  24. 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 04:31 AM
    data analysis, non normal, non normal distribution, psychology
    • Replies: 7
    • Views: 940
    04-29-2014, 02:23 PM Go to last post
  25. 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: 650
    04-29-2014, 01:01 PM Go to last post
  26. 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: 926
    04-29-2014, 10:49 AM Go to last post
  27. 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: 616
    04-29-2014, 10:41 AM Go to last post
  28. 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: 609
    04-29-2014, 07:27 AM Go to last post
  29. 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: 562
    04-29-2014, 05:16 AM Go to last post
  30. 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: 601
    04-28-2014, 11:47 PM Go to last post
  31. 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: 685
    04-26-2014, 02:22 AM Go to last post
  32. 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: 957
    04-25-2014, 12:25 PM Go to last post
  33. 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: 1,184
    04-25-2014, 04:56 AM Go to last post
  34. 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: 596
    04-25-2014, 02:18 AM Go to last post
  35. 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: 1,055
    04-24-2014, 09:26 PM Go to last post
  36. 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: 10,606
    04-24-2014, 06:46 PM Go to last post
  37. 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: 1,040
    04-24-2014, 04:25 PM Go to last post
  38. 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: 742
    04-24-2014, 12:43 PM Go to last post
  39. 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: 726
    04-24-2014, 12:11 PM Go to last post
  40. 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: 746
    04-23-2014, 09:58 AM Go to last post
  41. 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 08:07 AM
    • Replies: 3
    • Views: 1,286
    04-18-2014, 02:45 AM Go to last post
  42. 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: 1,094
    04-16-2014, 11:21 PM Go to last post
  43. 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: 980
    04-16-2014, 10:19 PM Go to last post
  44. 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: 1,235
    04-16-2014, 08:50 PM Go to last post
  45. 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: 1,072
    04-16-2014, 04:24 PM Go to last post
  46. 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: 830
    04-16-2014, 02:12 PM Go to last post
  47. 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: 1,006
    04-16-2014, 10:37 AM Go to last post
  48. 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: 981
    04-16-2014, 07:43 AM Go to last post
  49. 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: 693
    04-16-2014, 02:33 AM Go to last post
  50. 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: 909
    04-14-2014, 02:06 PM Go to last post
  51. 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: 1,146
    04-14-2014, 07:50 AM Go to last post
  52. 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 11:50 AM
    mcnemar, proportions, z test
    • Replies: 0
    • Views: 1,685
    04-11-2014, 11:50 AM Go to last post
  53. 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: 1,080
    04-10-2014, 10:43 AM Go to last post
  54. 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 03:14 PM
    • Replies: 1
    • Views: 1,960
    04-09-2014, 04:11 PM Go to last post
  55. 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: 766
    04-08-2014, 12:04 PM Go to last post
  56. 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: 1,293
    04-04-2014, 01:38 PM Go to last post
  57. 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: 1,067
    04-02-2014, 07:48 AM Go to last post
  58. 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: 1,719
    04-01-2014, 09:47 PM Go to last post
  59. 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: 1,465
    04-01-2014, 04:40 PM Go to last post
  60. 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: 1,948
    04-01-2014, 04:36 AM Go to last post

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