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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: 11,976
    11-09-2005, 11:21 PM Go to last post
  1. 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: 199
    Yesterday, 09:23 AM Go to last post
  2. 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: 0
    • Views: 134
    09-18-2014, 10:09 AM Go to last post
  3. 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: 83
    09-18-2014, 08:29 AM Go to last post
  4. 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: 67
    09-18-2014, 05:34 AM Go to last post
  5. Composite reliability vs Cronbach's alpha

    Hello Wondering if someone could clarify I'm developing a new measure with 10 constructs. Each construct has between 4 - 6 items. I've...

    Started by anon2000‎, 09-09-2014 03:02 AM
    2 Pages
    1 2
    composite reliability, cronbach's alpha, questionnaire development, reliability
    • Replies: 17
    • Views: 384
    09-17-2014, 05:06 PM Go to last post
  6. 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: 107
    09-15-2014, 12:10 AM Go to last post
  7. decision making

    is decision making related to psychology???

    Started by haraharae‎, 09-12-2014 12:47 PM
    • Replies: 2
    • Views: 135
    09-12-2014, 01:53 PM Go to last post
  8. 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: 240
    09-12-2014, 02:25 AM Go to last post
  9. 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: 86
    09-11-2014, 07:17 PM Go to last post
  10. 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: 210
    09-10-2014, 11:10 PM Go to last post
  11. 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: 69
    09-09-2014, 08:37 PM Go to last post
  12. 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: 138
    09-06-2014, 01:33 PM Go to last post
  13. 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: 88
    09-06-2014, 08:33 AM Go to last post
  14. 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: 108
    09-04-2014, 02:46 PM Go to last post
  15. 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: 119
    09-03-2014, 10:24 AM Go to last post
  16. 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: 113
    09-02-2014, 01:10 PM Go to last post
  17. 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: 227
    09-02-2014, 12:56 AM Go to last post
  18. 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: 190
    08-30-2014, 02:12 AM Go to last post
  19. 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: 129
    08-29-2014, 07:34 PM Go to last post
  20. 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: 148
    08-26-2014, 07:49 AM Go to last post
  21. 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: 109
    08-25-2014, 07:02 PM Go to last post
  22. 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: 137
    08-25-2014, 03:28 PM Go to last post
  23. 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: 239
    08-20-2014, 05:37 PM Go to last post
  24. 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: 226
    08-20-2014, 04:52 PM Go to last post
  25. 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: 207
    08-18-2014, 08:01 PM Go to last post
  26. 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: 99
    08-18-2014, 02:05 PM Go to last post
  27. 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: 102
    08-18-2014, 10:24 AM Go to last post
  28. 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: 245
    08-18-2014, 10:10 AM Go to last post
  29. 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: 126
    08-17-2014, 06:04 PM Go to last post
  30. 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: 125
    08-15-2014, 03:17 PM Go to last post
  31. 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: 142
    08-15-2014, 01:30 PM Go to last post
  32. 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: 172
    08-15-2014, 01:22 PM Go to last post
  33. 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: 130
    08-14-2014, 07:53 AM Go to last post
  34. 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: 139
    08-13-2014, 10:22 PM Go to last post
  35. 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: 173
    08-12-2014, 04:38 PM Go to last post
  36. 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: 164
    08-11-2014, 11:40 AM Go to last post
  37. 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 11:21 AM
    experiment, make money, paid, project, tutor needed
    • Replies: 6
    • Views: 656
    08-10-2014, 09:36 PM Go to last post
  38. 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: 149
    08-10-2014, 09:25 PM Go to last post
  39. 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: 147
    08-09-2014, 10:24 PM Go to last post
  40. 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: 135
    08-09-2014, 01:58 AM Go to last post
  41. 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: 206
    08-08-2014, 04:35 PM Go to last post
  42. 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: 306
    08-07-2014, 09:02 PM Go to last post
  43. 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: 133
    08-07-2014, 07:24 AM Go to last post
  44. 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: 187
    08-07-2014, 07:17 AM Go to last post
  45. 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: 270
    08-06-2014, 12:15 AM Go to last post
  46. 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: 217
    08-06-2014, 12:06 AM Go to last post
  47. 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: 474
    08-01-2014, 03:45 PM Go to last post
  48. 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: 187
    07-30-2014, 04:26 PM Go to last post
  49. 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: 164
    07-28-2014, 04:18 PM Go to last post
  50. 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: 1,823
    07-27-2014, 09:39 PM Go to last post
  51. 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: 141
    07-27-2014, 06:53 PM Go to last post
  52. 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: 950
    07-27-2014, 05:11 AM Go to last post
  53. chi square test

    Say that we have 3 trials. On each trial, we are trying to verify whether for each stimulus X, we have a reponse Y. For example I have a rat and...

    Started by carlajosef‎, 07-24-2014 09:48 PM
    • Replies: 2
    • Views: 203
    07-27-2014, 02:01 AM Go to last post
  54. Selecting an experimental design

    Hi everyone, I am designing an experiment where I manipulate the composition of a 3 person group. For example, the number of freshmen per group,...

    Started by g2007‎, 07-26-2014 10:33 PM
    • Replies: 0
    • Views: 178
    07-26-2014, 10:33 PM Go to last post
  55. interpreting ModMed results

    Can we interpret ModMed results if our indirect effect is significant (Class Intervals don't include zero) but our interactions are not significant...

    Started by psy_vm‎, 07-24-2014 02:32 AM
    data analysis, interpretation, moderated mediation, regression, significance
    • Replies: 2
    • Views: 211
    07-24-2014, 04:05 AM Go to last post
  56. Interpreting Mediation results

    Hello, I have a few questions regarding interpretation of my results for Mediation using Hayes' Process macro. The key point for finding...

    Started by psy_vm‎, 07-24-2014 02:25 AM
    data analysis, interpretation, macros, mediation, regression
    • Replies: 0
    • Views: 193
    07-24-2014, 02:25 AM Go to last post
  57. help with choosing the right statistics tests :)

    Hello! I'm currently studying my Masters and struggling with working out which statistical tests I'm using. I'm basically looking into a 30-day...

    Started by rainbowfire‎, 07-21-2014 10:17 AM
    • Replies: 5
    • Views: 309
    07-22-2014, 10:14 PM Go to last post
  58. Test-Retest Reliability Coefficient

    Hi Folks, Hopefully this is a relatively easy question. I collected data on a measure at two time points, and I would like to run a test-retest...

    Started by herwitz‎, 07-22-2014 08:35 AM
    • Replies: 6
    • Views: 288
    07-22-2014, 08:48 PM Go to last post
  59. Missing Data - Scale Validation

    Hi everyone, I am working to validate a 10-item scale, 5-point Likert response format in a sample of 673. Trying to find a "happy medium" for all...

    Started by tetrandra‎, 07-17-2014 01:49 AM
    hellllllp, likert scale, mean substitution, missing data
    • Replies: 6
    • Views: 297
    07-22-2014, 07:37 PM Go to last post
  60. Interpreting multiple mediations: significant total, but n.s. individual mediation

    Hi, I have a question about interpreting a result I've just discovered using Hayes's INDIRECT and PROCESS macros for SPSS. So, I have a variable X...

    Started by jonathanjong‎, 04-29-2014 04:17 PM
    • Replies: 1
    • Views: 314
    07-21-2014, 05:27 PM Go to last post

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