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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: 26,225
    11-10-2005, 12:21 AM Go to last post
  1. Angry Dealing with missing data in Repeated-measures ANOVAs

    Afternoon all, I've been running a longitudinal follow-up study to assess outcomes following a psychological treatment for ME. As to be expected,...

    Started by kal26‎, 10-02-2014 10:31 AM
    anovas, missing data, repeated measures
    • Replies: 3
    • Views: 975
    10-05-2014, 11:51 PM Go to last post
  2. Comparing within-group and outside-group

    Hi All, I want to compare results within a group to see if they are more closely related than random comparisons*. I'm really not sure the best...

    Started by Rob1983‎, 09-30-2014 04:38 AM
    • Replies: 2
    • Views: 830
    09-30-2014, 07:13 AM Go to last post
  3. Parametric vs. Non-parametric tests - what should I present?

    Hi everyone! I would like to have your opinion on this matter. I conducted both parametric and non-parametric MANOVAS for my master's...

    Started by arlp‎, 09-22-2014 12:16 PM
    • Replies: 5
    • Views: 1,303
    09-27-2014, 12:33 PM Go to last post
  4. Question Comparing two genetic models

    Hi there, I have a question about how to compare two models within SPSS. My problem: I have data acquired for let's say 100 people. My...

    Started by Xeno‎, 09-25-2014 07:47 AM
    • Replies: 4
    • Views: 1,088
    09-26-2014, 04:09 AM Go to last post
  5. G Theory / Variance Components problems

    I'm running SPSS Variance Components analyses using REML estimation. I have both real and fictitious data in which employees are rated by multiple...

    Started by Uwyze‎, 09-25-2014 10:33 AM
    • Replies: 9
    • Views: 2,040
    09-25-2014, 12:55 PM Go to last post
  6. Question Is a factor analysis possible on aggregated survey data?

    Hi, All, so I've been asked to help with an analysis and it's not as straightforward as I thought it would be. Background: The company gives...

    Started by SabbyATL‎, 09-25-2014 12:47 PM
    • Replies: 0
    • Views: 704
    09-25-2014, 12:47 PM Go to last post
  7. SEM - Comparing Models with Different Variables

    I am doing some structural equation modeling. I have made one model with 3 exogenous variables predicting 5 endogenous variables and would like to...

    Started by xralphyx‎, 01-31-2013 10:55 AM
    2 Pages
    1 2
    sem fit indices ecvi
    • Replies: 20
    • Views: 7,324
    09-23-2014, 06:58 PM Go to last post
  8. Mixed Design ANOVA (2 x 2 x 3) - Partial Eta Squared?

    I'm so confused! I have completed my thesis, and am being asked to provide the partial eta squared values for the mixed-design ANOVA I performed...

    Started by mackerbuddy‎, 09-22-2014 11:04 PM
    • Replies: 1
    • Views: 1,180
    09-23-2014, 06:47 AM Go to last post
  9. What test should I run? Repeated measures manova?

    Hello, I'm interested in determining if significant differences exist among consumers' perceptions of their two favorite restaurants on 4...

    Started by ColdPillow‎, 09-18-2014 10:09 AM
    • Replies: 1
    • Views: 1,012
    09-22-2014, 11:21 AM Go to last post
  10. Latent Growth Curve and covariates

    I'm examining latent growth curves in Mplus. My dependent variable is continuous, measured over three time points. I have a great unconditional...

    Started by reisareno‎, 09-20-2014 09:52 PM
    aic, bic, latent growth curve, mplus
    • Replies: 0
    • Views: 703
    09-20-2014, 09:52 PM Go to last post
  11. Advice on linear regression analysis

    Hi! For my dissertation, I'm conducting a research in which I'm exploring the role of some psychosocial variables (i.e. mindfulness, automatic...

    Started by arlp‎, 09-17-2014 12:26 PM
    • Replies: 5
    • Views: 1,233
    09-19-2014, 09:23 AM Go to last post
  12. Running non-parametric repeated measures analysis with split file on

    Okay so, I'm currently writing up my thesis, and I've got 2 between group variables and 3 within-group variables. I'm not doing a mixed design...

    Started by Mimi‎, 09-18-2014 08:29 AM
    friedman test, help me!, non-parameteric, split-file, spss
    • Replies: 0
    • Views: 861
    09-18-2014, 08:29 AM Go to last post
  13. sample size in a mixed ANOVA

    I'd like to calculate my sample size for a mixed ANOVA. I have 2 groups in my experiment and within groups I have 3 variables. the first variable has...

    Started by kata‎, 09-18-2014 05:34 AM
    • Replies: 0
    • Views: 1,182
    09-18-2014, 05:34 AM Go to last post
  14. Outliers question for repeated measures anova

    Hi, I just wanted some confirmation because I cannot seem to find a clear answer in any textbook yet. When running a repeated measures anova...

    Started by a.jerovich‎, 09-15-2014 12:10 AM
    • Replies: 0
    • Views: 1,107
    09-15-2014, 12:10 AM Go to last post
  15. decision making

    is decision making related to psychology???

    Started by haraharae‎, 09-12-2014 12:47 PM
    • Replies: 2
    • Views: 1,191
    09-12-2014, 01:53 PM Go to last post
  16. RMSEA impacted by high reliability scores..

    Hello again Sorry - In relation to running Confirmatory Factor Analysis - I'm wondering whether someone is aware of RMSEA being impacted by...

    Started by anon2000‎, 09-11-2014 03:07 AM
    cfa, model fit, reliability, rmsea
    • Replies: 12
    • Views: 2,167
    09-12-2014, 02:25 AM Go to last post
  17. post hoc/planned comparisons, what's ok and what's not ok?

    Hi, first time here and hoping you guys can help. I am working on a few analyses for my PI. The problem is that she knows nothing about stats and...

    Started by loust‎, 09-11-2014 07:17 PM
    • Replies: 0
    • Views: 596
    09-11-2014, 07:17 PM Go to last post
  18. Multilevel Linear Modelling Help

    Hi, I'm hoping someone with expertise with MLM/HLM etc might be able to help me. I recently conducted a transmission chain study looking at the...

    Started by freofan‎, 09-09-2014 09:50 PM
    fixed effects, hlm, mlm, random effects
    • Replies: 6
    • Views: 1,306
    09-10-2014, 11:10 PM Go to last post
  19. Factor Analysis and correlated measurement errors

    Hi, I am planning to do an experiment which seeks to measure two latent constructs related to different types of cognitive processing. For each...

    Started by Scarlatti‎, 09-09-2014 08:37 PM
    • Replies: 0
    • Views: 1,112
    09-09-2014, 08:37 PM Go to last post
  20. Multiple Dependent Variables and Multiple Time Points?

    Hello! I have a question about how to analyze my data. I have two groups, experimental VS control and 4 different measures related to various...

    Started by will22‎, 09-06-2014 01:33 PM
    • Replies: 0
    • Views: 899
    09-06-2014, 01:33 PM Go to last post
  21. Negative ICC values in SPSS

    Hi there, I have run an ICC to assess if scores for 5 dimensions of a quality of life scale have been rated the same by child and their parent....

    Started by Tazmes‎, 09-06-2014 08:33 AM
    icc, negative, spss, spss 21, variance
    • Replies: 0
    • Views: 1,639
    09-06-2014, 08:33 AM Go to last post
  22. Indirect and direct effects with multiple imputation (MIANALYZE)

    Hi all, I'm using SAS, doing some SEM with multiple imputation (PROC MI).. I can pull out almost everything I need using PROC CALIS and the PATH...

    Started by SimonSchus‎, 09-04-2014 02:46 PM
    • Replies: 0
    • Views: 535
    09-04-2014, 02:46 PM Go to last post
  23. Binomial Logistic Regression classification tables contradicted by chi square value?

    Hi, I have been attempting to run a binomial logistic regression to establish whether maternal anxiety status (anxious or non-anxious) and child...

    Started by Goldie09‎, 09-03-2014 10:24 AM
    • Replies: 0
    • Views: 579
    09-03-2014, 10:24 AM Go to last post
  24. Can I use "mixed ancova with repeated measures" in this case?

    Hi everybody, I have 4 separated groups (4 different interventions), and I measured the dependent variable over 4 time points. I considered my...

    Started by roshanak‎, 09-02-2014 01:10 PM
    • Replies: 0
    • Views: 685
    09-02-2014, 01:10 PM Go to last post
  25. Analysis for behavior change over sample treatments

    Hello all! My research examined if social behaviors in animals changed with the distribution of food treatment (clumped vs. dispersed food). My...

    Started by caddyhair‎, 08-31-2014 01:13 PM
    behavioural data, matrices, matrix, matrix data, social network
    • Replies: 3
    • Views: 981
    09-02-2014, 12:56 AM Go to last post
  26. Minimun sample for a Mann-Whitney U test

    Hello! :wave: What is the minimun sample per group for a Mann-Whitney U test? I appreciate if you give also a reference about it Thanks!

    Started by dmon‎, 08-29-2014 06:48 PM
    mann-whitney test, sample size
    • Replies: 1
    • Views: 802
    08-30-2014, 02:12 AM Go to last post
  27. Moderation Analysis

    Hi, Got a question for moderation analysis. In Step 2 where I entered the interaction term, the R^2 change = .064, F(3, 73)=1.848, p = .146, was...

    Started by ccy‎, 08-29-2014 06:51 PM
    • Replies: 1
    • Views: 671
    08-29-2014, 07:34 PM Go to last post
  28. Basic question: linear trend effect on one-way ANOVA

    Dear experts, I have a quite basic question, when doing a one-way ANOVA (4 groups) in SPSS, if i don't find a significative effect (F test), does...

    Started by S_CALVIN‎, 08-26-2014 07:49 AM
    • Replies: 0
    • Views: 867
    08-26-2014, 07:49 AM Go to last post
  29. Question Intraclass Correlation Coefficient Types

    I have two datasets in which I probably need to use the intraclass correlation coefficient, and I want to make sure I choose the right type. ...

    Started by noober‎, 08-25-2014 07:02 PM
    data analysis, icc
    • Replies: 0
    • Views: 753
    08-25-2014, 07:02 PM Go to last post
  30. Nested vs non-nested model?

    Hi all, I am running a confirmatory factor analysis and trying to work out if my two models are nested or not - this will be important for me to...

    Started by SimonSchus‎, 08-25-2014 02:30 PM
    amos, cfa, models, nested, sem
    • Replies: 2
    • Views: 3,010
    08-25-2014, 03:28 PM Go to last post
  31. Random Sample Assumption Violation and Chi-Square/Reg: Ordinal and Nominal Data

    Hello Everyone, I'm a grad student in biostatistics and am currently working at my first job with real world data. I'm analyzing survey data...

    Started by doughnut1‎, 08-20-2014 01:31 PM
    assumptions, chi square?, ordinal and categorical, violation
    • Replies: 2
    • Views: 1,343
    08-20-2014, 05:37 PM Go to last post
  32. Steps for evaluate factorial invariance in AMOS

    Steps to evaluate factorial invariance Hi! I have to compare a model in samples of two countries, I have to run a factorial invariance analysis...

    Started by dmon‎, 08-20-2014 04:52 PM
    amos, construct validity, factorial invariance
    • Replies: 0
    • Views: 1,519
    08-20-2014, 04:52 PM Go to last post
  33. Categorical Moderator Regression

    Hi, I am trying to do a moderation analysis with: IV: Depressive symptoms Moderator: Condition (threat vs no threat) DV: Closeness with...

    Started by ccy‎, 08-17-2014 06:57 PM
    • Replies: 2
    • Views: 845
    08-18-2014, 08:01 PM Go to last post
  34. Inquiry about the moderated mediation, real hurry

    Hello everyone and thank you for your attention. I am now facing the problem of moderated mediation interpretation. Here is the background: ...

    Started by erikye‎, 08-18-2014 02:05 PM
    • Replies: 0
    • Views: 746
    08-18-2014, 02:05 PM Go to last post
  35. 2X2X2 design.. what statistics should I use?

    Hi, I am doing a research with a 2X2X2 design: Between subjects (Positive Mood VS Negative Mood) Within subjects (Positive Stimuli 1 VS Negative...

    Started by TiffanyReed‎, 08-18-2014 10:24 AM
    ancova, anova, research, statistics
    • Replies: 0
    • Views: 1,529
    08-18-2014, 10:24 AM Go to last post
  36. Which type of ANOVA to choose: split plot repeated measures or alternative?

    Hi all, I'm new to this forum but not to statistics. There's just this problem I can't get my head around, I hope someone can help me. In my...

    Started by Cis‎, 08-09-2014 05:01 PM
    • Replies: 6
    • Views: 1,195
    08-18-2014, 10:10 AM Go to last post
  37. Breaking-down main effect to examine demographic differences

    I showed videos of musical performances which where visually different, but the sound was identical. Participants graded both the appearance of the...

    Started by PaulC‎, 08-15-2014 08:21 PM
    interaction effects
    • Replies: 1
    • Views: 738
    08-17-2014, 06:04 PM Go to last post
  38. Estimating and using reliability metric with the same data

    Hi, I'd like to know if it is reasonable to use the same set of data to estimate and use a reliability metric from repeated measures? I am mostly...

    Started by Themistocle‎, 08-15-2014 03:17 PM
    reliability measurement
    • Replies: 0
    • Views: 548
    08-15-2014, 03:17 PM Go to last post
  39. Question about which statistical analysis to use

    I have 3 different groups that are all completing a survey and receiving a total score. I want to know whether being high or low on some other survey...

    Started by lsrms3‎, 08-15-2014 01:30 PM
    • Replies: 0
    • Views: 683
    08-15-2014, 01:30 PM Go to last post
  40. Mediation, Bootstrapping and Sample Size

    I'm new to statistics overall, and even newer to mediation but I'm attempting to analyze data using Process for SPSS. Before anything else, do I need...

    Started by lsrms3‎, 08-12-2014 01:44 PM
    bootstrap, bootstrapping, mediation, mediation analysis, sample size
    • Replies: 2
    • Views: 834
    08-15-2014, 01:22 PM Go to last post
  41. Basic hypothesis question - variables

    Hello, I am new to statistics so please excuse my ignorance. My question relates to a hypothesis which I would like to test. I know that...

    Started by funnyman‎, 08-14-2014 05:39 AM
    hypothesis, variables
    • Replies: 2
    • Views: 773
    08-14-2014, 07:53 AM Go to last post
  42. Data Analysis Design Question

    Hi All, first timer here. I have data and am at a loss for how to analyze it to get at what I'm interested in. I will try and explain what I have and...

    Started by jennigold‎, 08-13-2014 10:22 PM
    • Replies: 0
    • Views: 637
    08-13-2014, 10:22 PM Go to last post
  43. Advice needed on how to analyze categ data

    Hoping someone out there can provide some assistance. Here is my situation. I have two categorical variables (each with four levels....

    Started by tobrien‎, 08-12-2014 04:38 PM
    • Replies: 0
    • Views: 801
    08-12-2014, 04:38 PM Go to last post
  44. Justifying data analysis

    Hi I have carried out a study looking at the effectiveness of speech synthesis tools on the iPad in allowing pupils with dyslexia to access written...

    Started by doodlebug752000‎, 08-11-2014 10:34 AM
    • Replies: 4
    • Views: 1,178
    08-11-2014, 11:40 AM Go to last post
  45. Unhappy Experiment With Fictitious Data

    After a semester full of open-note/curve graded exams and very few homework assignments, our stats professor decided that our final project would...

    Started by Cassiology‎, 12-08-2013 12:21 PM
    experiment, make money, paid, project, tutor needed
    • Replies: 6
    • Views: 2,323
    08-10-2014, 09:36 PM Go to last post
  46. Simple slopes - positive B for a negative slope ? :S

    EDIT - I've resolved what was causing the below issue! The issue arose because using 0 to make individual value of thinness a constant when all...

    Started by artemisynn‎, 08-10-2014 09:25 PM
    • Replies: 0
    • Views: 777
    08-10-2014, 09:25 PM Go to last post
  47. Why is my contrast sig.in a 1-way but no sig. interaction in a 2-way ANOVA

    Hi, So I had a 2(analytical task, control task) by 2(rating: confidence, liking) design that I incorrectly put into a One-way ANOVA with planned...

    Started by Socstats‎, 08-09-2014 07:12 PM
    anova, interaction, planned contrast
    • Replies: 1
    • Views: 722
    08-09-2014, 10:24 PM Go to last post
  48. Exclamation Please, I need help in statistics interpretation!

    Hello, I am a French student in psychology and I am currently using spss to analyze my research project's results. I work on the perception of...

    Started by camillec‎, 08-09-2014 01:58 AM
    • Replies: 0
    • Views: 810
    08-09-2014, 01:58 AM Go to last post
  49. Desperate call for statistics help

    Hello, I've just finished my placement year in my undergraduate degree but I'm really stuck with which statistical tests I need, and how to input the...

    Started by GeorgiaC‎, 08-08-2014 12:09 PM
    • Replies: 6
    • Views: 949
    08-08-2014, 04:35 PM Go to last post
  50. Affordable individual license stats software?

    Hi all, As my education in math and statistics progresses I think statistical consulting might become a good way to make a little money on the...

    Started by bruin‎, 08-06-2014 12:36 AM
    • Replies: 9
    • Views: 1,274
    08-07-2014, 09:02 PM Go to last post
  51. Dimensionality interpretation

    Hi, could somebody help me with interpreting this results of one 30-item (dichotic) test, please? Namely, I was surrprised by the very-very low Beta...

    Started by Martin Marko‎, 08-07-2014 07:24 AM
    • Replies: 0
    • Views: 678
    08-07-2014, 07:24 AM Go to last post
  52. Stats Advice Needed

    Hi Everyone, I've just recently started a PhD (In January) and, ashamed as I am to admit it, I am struggling a bit with the stats for my first...

    Started by c_phillips4‎, 08-06-2014 01:05 PM
    • Replies: 3
    • Views: 926
    08-07-2014, 07:17 AM Go to last post
  53. Statistic for Nominal vs. Scale Data

    Hi Everyone, I would like to find if there are statistically significant relationships between two types of data (I'm using SPSS): nominal and...

    Started by herwitz‎, 08-03-2014 10:11 AM
    • Replies: 5
    • Views: 994
    08-06-2014, 12:15 AM Go to last post
  54. Question V.low sample size - what stats?

    Hi there, I'm currently doing the analysis for my dissertation and am really struggling. Basically I measured household responsibility (HHR) in...

    Started by tamsynann‎, 08-01-2014 04:39 AM
    • Replies: 5
    • Views: 1,071
    08-06-2014, 12:06 AM Go to last post
  55. Logistic regression

    Dear everybody, I need some help with logistic regression. I'm trying to predict likelihood of consuming psychoactive drugs and practicing risk...

    Started by skraljev‎, 08-01-2014 08:09 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,564
    08-01-2014, 03:45 PM Go to last post
  56. Anything wrong w mixing estimated factor scores and raw variables in cluster analysis

    Hi folks, I have a number of continuous socio demographic variables that I have condensed using PCA into 8 factors representing composites like...

    Started by mike n‎, 07-30-2014 04:26 PM
    • Replies: 0
    • Views: 788
    07-30-2014, 04:26 PM Go to last post
  57. Response Feature Analysis--Word List Recall

    Hi, I think I'm looking at response feature analysis, but I'm not sure how to go about this. FYI, this post refers only to providing descriptive...

    Started by jcr‎, 07-28-2014 01:13 AM
    rate of improvement, response feature analysis, slope, word list recall
    • Replies: 1
    • Views: 908
    07-28-2014, 04:18 PM Go to last post
  58. Relationship between dependent variables only

    I am looking at the relationship between a number of dependent variables, I want to look at whether a measure of stress correlates to 3 meausres of...

    Started by Aimee‎, 06-28-2011 09:52 AM
    • Replies: 3
    • Views: 2,860
    07-27-2014, 09:39 PM Go to last post
  59. Forming correct grouping variables for analysis

    Hi. I have been given a dataset that I need to analyse. The questions were asked by a parent about whether their children have 1. no allergies, 2....

    Started by CassandraG‎, 07-25-2014 10:23 PM
    • Replies: 1
    • Views: 997
    07-27-2014, 06:53 PM Go to last post
  60. Statistically correct to compare two Spearman's ρ-Vaules directly?

    Hello statistic-community :wave: My sample size is approx. 1.500. I have different variables (A, B, C, D) which are all ordinal scaled. I have...

    Started by gentix‎, 07-17-2014 05:26 AM
    bivariate correlations, effect sizes, fisher's z-transformed, spearman's rho
    • Replies: 4
    • Views: 7,076
    07-27-2014, 05:11 AM Go to last post

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