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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: 21,121
    11-10-2005, 12:21 AM Go to last post
  1. Why do means&error bars in an ANOVA graph depend on its factors and covariates?

    Hi all, I have a mixed-model design with between-subjects factors Group (treatment, control) and Difficulty (easy, hard), and within-subjects...

    Started by wildetudor‎, 06-29-2014 01:47 PM
    • Replies: 0
    • Views: 446
    06-29-2014, 01:47 PM Go to last post
  2. Need help with missing values

    Participants completed 2 questionnaires at Time 1, and each questionnaire is being scored for empathy. Because of recording issues, I do not have an...

    Started by Yael‎, 06-29-2014 01:08 PM
    imputation, missing values
    • Replies: 0
    • Views: 427
    06-29-2014, 01:08 PM Go to last post
  3. Scores derived from variance specific for a factor

    Hi, I received a cooment from one of the reviewer but I do not understand what I should do. Here is short explanation of the study: This study...

    Started by arts‎, 06-25-2014 02:35 PM
    factor analysis
    • Replies: 5
    • Views: 884
    06-29-2014, 07:29 AM Go to last post
  4. Mediation analysis (Baron and Kenny)

    Hey, I have some problems concerning the analysis of a mediation model. If you guys could give me some tips that would be great! :) First of...

    Started by stl111‎, 06-27-2014 06:43 PM
    • Replies: 2
    • Views: 752
    06-28-2014, 02:21 PM Go to last post
  5. Testing interaction between measures which are in different units

    Hi, I have within-subject design (each subject came twice). One of the visits contained manipulation and another was a placebo. For each...

    Started by john.gelburg‎, 06-28-2014 07:02 AM
    anova
    • Replies: 0
    • Views: 443
    06-28-2014, 07:02 AM Go to last post
  6. I am terrible at statistics and need help regarding which analysis to choose

    Hi everyone, As my title states; statistics have always been very difficult for me. My teacher asked me to think about what analyses she could...

    Started by vanillaangel‎, 06-26-2014 04:30 PM
    • Replies: 5
    • Views: 851
    06-27-2014, 12:38 PM Go to last post
  7. Comparing exp and control groups in a mixed design with a comparatively small N

    My study investigates the type of dialogue and behavior between children working in groups on a class activity, with and without an intervention. It...

    Started by rsm‎, 06-26-2014 02:29 AM
    experimental, mixed anova, multiple datasets
    • Replies: 0
    • Views: 598
    06-26-2014, 02:29 AM Go to last post
  8. Queries regarding ANCOVA and MANCOVA

    In a pre-post test experimental study having 3x2 factorial design, there are: 1. two independent variables: (a) teaching methods (3...

    Started by statanx‎, 09-07-2012 03:26 AM
    3 Pages
    1 2 3
    • Replies: 42
    • Views: 8,241
    06-24-2014, 12:13 PM Go to last post
  9. interpreting multi-level logit model

    Hi, I have this output from Stata (an explanation of the variables follows). As far as I understand, the policyfoundation coefficient is...

    Started by winnie1825‎, 06-24-2014 10:32 AM
    logistic multilevel
    • Replies: 0
    • Views: 606
    06-24-2014, 10:32 AM Go to last post
  10. paired sample t-test for repeated measures in 1 subject

    I am conducting a psychology experiment. In my pilot study I analyze responses of one subject which ran through two conditions. The task is to...

    Started by Monstera‎, 06-23-2014 03:18 AM
    dependent, independent sample t-test, paired, t-test
    • Replies: 9
    • Views: 1,094
    06-23-2014, 06:51 AM Go to last post
  11. Low Cronbachs alpha when using a standardised measure- how do I explain this?

    Hi, for my thesis I conducted cronbachs alpha on several measures- the core questionnaire is the Five Facet Mindfulness Questionnaire (FFMQ). My...

    Started by MJag‎, 06-22-2014 08:39 AM
    • Replies: 3
    • Views: 653
    06-22-2014, 02:38 PM Go to last post
  12. How to analyze a variable measured on a Likert scale and its interaction with another

    I have to analyze this variable which consists of scores given to 3 items (1-9 scale). This "likert scale" measures "brand commitment" if thats...

    Started by Stefan Stefanov‎, 06-17-2014 08:31 AM
    interaction, method, spss
    • Replies: 1
    • Views: 574
    06-17-2014, 09:20 AM Go to last post
  13. SEM - total variance explained by model?

    Question #1: Is there any way to calculate the total amount of variance explained by an SEM model? My committee seems to think there is and they...

    Started by buntington‎, 06-15-2014 10:13 AM
    • Replies: 12
    • Views: 4,944
    06-17-2014, 02:50 AM Go to last post
  14. Violating ANCOVA "Homogeneity of Regression of Slopes"

    Hi all, I am working on a publication where I ran a 3-way mixed design ANCOVA. For one of my between-subjects IVs (gender) I found a significant...

    Started by TaylorOliver4‎, 06-16-2014 07:29 PM
    • Replies: 0
    • Views: 773
    06-16-2014, 07:29 PM Go to last post
  15. Interrater Reliability. Is MORE better?

    Which design is more powerful: testing interrater reliability with 2 judges or 4 judges? (citations appreciated)

    Started by bitor‎, 06-16-2014 01:47 PM
    interrater reliability, psychology, reliability
    • Replies: 3
    • Views: 492
    06-16-2014, 02:37 PM Go to last post
  16. Interaction effect not significant, but graph indicates otherwise...

    For my thesis I had two hypotheses regarding moderator/interaction effects: h1: Exisiting game experience (dependent, continous) moderates the...

    Started by rigest‎, 06-14-2014 04:21 PM
    • Replies: 8
    • Views: 1,139
    06-15-2014, 02:44 AM Go to last post
  17. Principal component analysis - problems with input data

    Hello everyone. As the title suggests, I have a problem with figuring out what data exactly to feed my PCA. The situation: I have a certain number...

    Started by PCAquestion‎, 06-14-2014 05:40 PM
    • Replies: 0
    • Views: 495
    06-14-2014, 05:40 PM Go to last post
  18. Analysis question

    My analysis is a 2 X 2 , looking at the influence of gender (male, female) & SES (middle class, poor) of a job candidate on how he is evaluated for a...

    Started by norajones‎, 06-14-2014 03:27 PM
    • Replies: 0
    • Views: 379
    06-14-2014, 03:27 PM Go to last post
  19. inter-rater reliability with multiple raters on spss statistics

    Hi everyone! I need help with a research assignment. I'm new to IBM SPSS statistics, and actually statistics in general, so i'm pretty overwhelmed. ...

    Started by redeyedfrog‎, 06-13-2014 11:36 PM
    • Replies: 0
    • Views: 757
    06-13-2014, 11:36 PM Go to last post
  20. Determining the right statistical test

    Please delete the thread :)

    Started by aviamo‎, 06-12-2014 01:10 PM
    • Replies: 0
    • Views: 553
    06-12-2014, 01:10 PM Go to last post
  21. Experiment design

    Hi I am designing an experiment for school and I don't know how best to describe the factorial design. I have three conditions, and I will be...

    Started by Shawnus‎, 06-01-2014 08:56 AM
    • Replies: 3
    • Views: 549
    06-12-2014, 11:16 AM Go to last post
  22. statistical symbols in microsoft word

    I've spent like 5 hours trying to figure out how to insert a bar (called overstrike or overline) over a word ... like the bar that goes over x for...

    Started by lissiemait‎, 06-08-2014 12:17 AM
    microsoft word, overstrike, statistics, symbols, word
    • Replies: 5
    • Views: 1,597
    06-10-2014, 12:33 AM Go to last post
  23. How to analyse..?

    Hi, I have a problem to choose a method for analysing data from my experiment. I have one within-subjects (all four stimuli presented to every...

    Started by registerStat‎, 06-06-2014 08:03 PM
    • Replies: 0
    • Views: 523
    06-06-2014, 08:03 PM Go to last post
  24. Cool Preacher&Hayes Process macro

    Hello friends! We are interested in the relationship of x on y, mediated by m. All variables are dichotomous except for x, which is continuous....

    Started by Psychstat‎, 06-06-2014 02:01 PM
    preacher&hayes
    • Replies: 1
    • Views: 1,140
    06-06-2014, 05:10 PM Go to last post
  25. Could really use some advice for my thesis!

    So I'm almost done with my thesis but I'm struggling with my last hypothesis. Some background information on my subject: I'm trying to find out what...

    Started by rigest‎, 06-06-2014 05:32 AM
    • Replies: 3
    • Views: 667
    06-06-2014, 07:26 AM Go to last post
  26. Nonparametric/Ranking Data Help!!

    Hi all, I am a PHD student attempting to come to grips with an analysis of some recent data. I have a repeated measures design. 220 students were...

    Started by kip_cheers‎, 06-03-2014 09:22 PM
    friedman test, nonparametric, rank, repeated measures
    • Replies: 0
    • Views: 473
    06-03-2014, 09:22 PM Go to last post
  27. Unhappy Sample size calculation for multiple regression

    Hi all! I am struggling with sample size calculations at the minute. I have looked everywhere but all I get is formulas. I have downloaded MedCalc...

    Started by Christie‎, 06-03-2014 05:58 PM
    correlation, multiple regression, power statistics, sample size calculation
    • Replies: 0
    • Views: 577
    06-03-2014, 05:58 PM Go to last post
  28. Autism behaviour - how to analyse data

    I'd like help how to use data on the behaviour of an autistic individual. In my work I'm taking care of an adult male with autism. He's in his...

    Started by therigidrook‎, 06-01-2014 02:51 PM
    • Replies: 2
    • Views: 522
    06-03-2014, 04:46 PM Go to last post
  29. Question: What type of experimental design do I have here?

    I feel a bit unsure and maybe you can help me. I've got the data of a big firm, where there is a population of 1400 administrative personnel...

    Started by womanfromthesea‎, 05-20-2014 04:49 PM
    • Replies: 5
    • Views: 875
    06-03-2014, 12:15 PM Go to last post
  30. How to analyze parents' talk when codes are not normal in a mixed design?

    This is a but tricky to explain, so I will do my best. I am trying to analyze coded talk by parents for three different categories of objects. I...

    Started by dsiegel06‎, 05-30-2014 06:40 PM
    mixed anova, non-parametric, parent talk
    • Replies: 1
    • Views: 482
    06-03-2014, 04:06 AM Go to last post
  31. HELP with experimental analysis (fear conditioning)

    I am running an olfactory fear conditioning procedure in which 2 odors (odor A/ odor B) are either paired with a footshock (CS+) or absence of...

    Started by jzunder‎, 05-29-2014 06:35 PM
    anova, mixed between anova, repeated measure anova, spss
    • Replies: 1
    • Views: 504
    06-02-2014, 08:02 AM Go to last post
  32. Not sure if i chose the correct statistical test to analyze data

    I'm trying to help a friend out with the statistics parts of her bachelors paper. Right now she is still the the planing stages and has not gathered...

    Started by hugstari‎, 05-30-2014 08:06 AM
    chi sq test, questionnaire, statistical design
    • Replies: 0
    • Views: 438
    05-30-2014, 08:06 AM Go to last post
  33. Condensed data vs. raw data. What analyses would be appropriate?

    Hello all, I am new to this forum and would greatly appreciate your help. I have two datasets: one dataset is from 1980 and only “processed”...

    Started by Daida‎, 05-29-2014 02:13 PM
    • Replies: 1
    • Views: 496
    05-29-2014, 02:48 PM Go to last post
  34. HELP understanding results and writing discusion

    can somebody help me !! I am going crazy haha The third hypothesis predicted that people in a happy mood were more likely to process information...

    Started by jpark‎, 05-29-2014 01:57 AM
    • Replies: 0
    • Views: 360
    05-29-2014, 01:57 AM Go to last post
  35. Cross-lagged panel size: sample size of 48

    I have performed a cross-lagged correlational study with 2 variables and 2 waves. My sample size is 48 subjects. Is it possible to perform it with...

    Started by Chr‎, 05-28-2014 01:34 AM
    correlation, cross-lagged, sample size
    • Replies: 0
    • Views: 455
    05-28-2014, 01:34 AM Go to last post
  36. Weighted Kappas...please help!

    Hello! I've looked all over regarding how to do this but am still coming up short. Please help! I have 16 data points. I have provided the weights!!...

    Started by rolliefngr7‎, 05-26-2014 06:00 PM
    cohen's kappa, statistical analysis, statistical computing, statistics help, weighted kappa
    • Replies: 0
    • Views: 390
    05-26-2014, 06:00 PM Go to last post
  37. What correlations to use for ANCOVA assumptions in a 2-group study?

    Hi all, I have a question regarding ANCOVA analyses. For my study, I am looking at between group differences on a memory measure that is made...

    Started by can_dodge_a_wrench‎, 05-26-2014 05:52 PM
    • Replies: 0
    • Views: 342
    05-26-2014, 05:52 PM Go to last post
  38. Assessing change using McNemar's test

    I have Pre and post-intervention test scores of a number of skills rated from 0-3 (0 = Poor, 1 = Fair, 2 = Average, 3 = Good) for 5 participants. I...

    Started by rsm‎, 05-24-2014 09:31 AM
    chi-square, mcnemar test, pre-post
    • Replies: 4
    • Views: 575
    05-24-2014, 05:41 PM Go to last post
  39. Inputting data from my questionnaires for my second year project!

    Hello there, I am really struggling with my second year project as I am clueless when it comes to SPSS. So now that i've collected all my...

    Started by Aggie93‎, 05-24-2014 02:19 PM
    data input
    • Replies: 1
    • Views: 491
    05-24-2014, 02:37 PM Go to last post
  40. 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 09:31 PM
    • Replies: 0
    • Views: 457
    05-21-2014, 09:31 PM Go to last post
  41. 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 01:08 PM
    • Replies: 2
    • Views: 579
    05-19-2014, 02:53 PM Go to last post
  42. 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 10:55 PM
    • Replies: 3
    • Views: 5,103
    05-18-2014, 05:09 PM Go to last post
  43. "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 06:43 PM
    • Replies: 2
    • Views: 2,702
    05-16-2014, 07:10 PM Go to last post
  44. 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 11:55 AM
    • Replies: 6
    • Views: 608
    05-16-2014, 04:59 PM Go to last post
  45. 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: 1,655
    05-16-2014, 04:30 AM Go to last post
  46. 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: 638
    05-15-2014, 08:36 PM Go to last post
  47. 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: 550
    05-14-2014, 10:00 AM Go to last post
  48. 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: 701
    05-14-2014, 09:58 AM Go to last post
  49. 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: 1,414
    05-13-2014, 02:34 PM Go to last post
  50. 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: 536
    05-12-2014, 11:57 AM Go to last post
  51. 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: 443
    05-11-2014, 10:23 AM Go to last post
  52. 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: 423
    05-08-2014, 10:58 PM Go to last post
  53. 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: 799
    05-07-2014, 07:38 AM Go to last post
  54. 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: 775
    05-06-2014, 09:16 AM Go to last post
  55. 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: 930
    05-05-2014, 05:45 AM Go to last post
  56. 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: 373
    05-05-2014, 04:40 AM Go to last post
  57. 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: 692
    05-04-2014, 08:44 PM Go to last post
  58. 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: 2,146
    05-03-2014, 10:24 PM Go to last post
  59. 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: 458
    05-01-2014, 07:31 PM Go to last post
  60. 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: 604
    05-01-2014, 12:31 PM Go to last post

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