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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: 22,707
    11-09-2005, 11:21 PM Go to last post
  1. 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: 772
    04-16-2014, 11:21 PM Go to last post
  2. 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: 638
    04-16-2014, 10:19 PM Go to last post
  3. 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: 774
    04-16-2014, 08:50 PM Go to last post
  4. 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: 725
    04-16-2014, 04:24 PM Go to last post
  5. 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: 703
    04-16-2014, 02:12 PM Go to last post
  6. 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: 875
    04-16-2014, 10:37 AM Go to last post
  7. 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: 779
    04-16-2014, 07:43 AM Go to last post
  8. 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: 557
    04-16-2014, 02:33 AM Go to last post
  9. 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: 748
    04-14-2014, 02:06 PM Go to last post
  10. 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: 916
    04-14-2014, 07:50 AM Go to last post
  11. Question Comparing proportions from the (somewhat) same sample

    Hi everybody, Iím 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: 1,015
    04-11-2014, 11:50 AM Go to last post
  12. 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: 676
    04-10-2014, 10:43 AM Go to last post
  13. Reference values for ICC (Intraclass Correlation Coefficient)

    Hello everyone, I have a question about the IC, that I havenít 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: 1,639
    04-09-2014, 04:11 PM Go to last post
  14. 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: 598
    04-08-2014, 12:04 PM Go to last post
  15. 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: 919
    04-04-2014, 01:38 PM Go to last post
  16. 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: 938
    04-02-2014, 07:48 AM Go to last post
  17. 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: 1,315
    04-01-2014, 09:47 PM Go to last post
  18. 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: 1,221
    04-01-2014, 04:40 PM Go to last post
  19. 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: 1,662
    04-01-2014, 04:36 AM Go to last post
  20. 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 03:55 AM
    • Replies: 3
    • Views: 530
    03-31-2014, 10:51 AM Go to last post
  21. 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 12:19 AM
    • Replies: 0
    • Views: 447
    03-28-2014, 12:19 AM Go to last post
  22. 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 06:10 AM
    experiment analysis, experiment design, skew
    • Replies: 7
    • Views: 881
    03-25-2014, 06:27 PM Go to last post
  23. 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 03:35 PM
    • Replies: 0
    • Views: 614
    03-25-2014, 03:35 PM Go to last post
  24. 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 09:49 AM
    • Replies: 3
    • Views: 606
    03-25-2014, 03:24 AM Go to last post
  25. What test would you use?

    Hi all, I was wondering what tests you would use on these figures, I've already done my analysis but was wondering if there's anything better out...

    Started by QueenOfStats‎, 03-23-2014 09:01 AM
    • Replies: 1
    • Views: 485
    03-24-2014, 10:59 PM Go to last post
  26. Significance and Discriminant Function Analysis

    Hi, If I have specific a-priori assumptions to test with a DFA does this lessen the need for the Wilks Lambda ouput being significant? Thanks...

    Started by baddeleywm‎, 03-24-2014 11:30 AM
    • Replies: 0
    • Views: 442
    03-24-2014, 11:30 AM Go to last post
  27. repeated measures ANOVA with quadratic covariate??

    Hi, I have some data that I am struggling to analyse. Any advice would be much appreciated. My DV is a repeated measure with two levels (test...

    Started by achan‎, 03-24-2014 05:56 AM
    • Replies: 0
    • Views: 675
    03-24-2014, 05:56 AM Go to last post
  28. Mauchly's Test Output

    (All participants participated in two trials, with three conditions in each trial.. Each participants' accuracy and reaction time was measured for...

    Started by Sarika‎, 03-23-2014 07:39 AM
    • Replies: 0
    • Views: 444
    03-23-2014, 07:39 AM Go to last post
  29. ANOVA for a partitioned sample

    Hello, I'm a bit new to statistics and I'm currently analysing the results of an experiment and not sure how to proceed... So first a small...

    Started by masch‎, 03-21-2014 04:32 AM
    • Replies: 2
    • Views: 672
    03-21-2014, 10:15 AM Go to last post
  30. Comparing 2 effects simultaneously - which test to use?

    Hi, I am conducting research on the effects of time-of-day and sleep on memory on rats. There are 2 groups: one group that sleeps between memory...

    Started by luako‎, 03-18-2014 10:52 AM
    • Replies: 3
    • Views: 534
    03-20-2014, 11:02 AM Go to last post
  31. Roy Bargmann Stepdown Analysis

    Hi, I am presently trying to run the Roy bargmann Stepdown Analysis with the following code: DATASET ACTIVATE DataSet1. MANOVA...

    Started by baddeleywm‎, 03-20-2014 07:17 AM
    • Replies: 0
    • Views: 1,749
    03-20-2014, 07:17 AM Go to last post
  32. To transform or not to transform?

    Hi, I'm currently working on the effect of video games and music on aggressive behaviour. The independent variables are type of game (FPS/Puzzle) and...

    Started by Kakazam‎, 03-18-2014 12:36 PM
    • Replies: 11
    • Views: 1,109
    03-20-2014, 06:49 AM Go to last post
  33. Help- SPSS non significant two way ANOVA

    Hi, Thankyou in advance for reading my post. I am currently doing a two way anova for the effect of (gender) and (physically active or not),...

    Started by clh2‎, 03-19-2014 08:38 AM
    • Replies: 4
    • Views: 975
    03-19-2014, 09:04 AM Go to last post
  34. MANOVA help please

    I was wondering if anyone can help, I have completed a MANOVA for my psychology dissertation however the assumption of Multicollinearity and...

    Started by missgjb‎, 03-19-2014 05:47 AM
    • Replies: 0
    • Views: 415
    03-19-2014, 05:47 AM Go to last post
  35. need help in my psychological research

    Hi. I am student from Slovakia. Sorry, my english is not good. I need help with my research. I am doing research, where i compare symptoms (in...

    Started by Taini‎, 03-18-2014 01:41 PM
    • Replies: 4
    • Views: 613
    03-19-2014, 03:43 AM Go to last post
  36. PEAS help, deciding whether my data is normal and then which test to use

    Hi, I am currently doing my dissertation. My supervisor has said to me that I can choose whether to ignore non-normal data or not. However I am...

    Started by fellis‎, 03-17-2014 06:56 AM
    • Replies: 7
    • Views: 1,175
    03-18-2014, 11:19 AM Go to last post
  37. Help with multiple covariates and moderators in analyses

    Hi all, I am trying to figure out the appropriate analyses for a project and I am hitting a bit of a wall. My primary question involves whether...

    Started by spiritcaravan‎, 03-17-2014 02:11 PM
    • Replies: 0
    • Views: 483
    03-17-2014, 02:11 PM Go to last post
  38. Question Need data analysis direction.

    Iím a grad student (clinical psychology) and research neophyte and need some direction. Once I gain statistical ground I would be more than happy to...

    Started by Neophyte5‎, 03-16-2014 07:35 PM
    data analysis, psychology, quasi-experimental
    • Replies: 0
    • Views: 520
    03-16-2014, 07:35 PM Go to last post
  39. Non-parametric data analysis - 2 questions

    I have 1 independent variable with 3 levels and four dependent continuous variables The four dependent variables within the levels of the IV...

    Started by hannou‎, 03-16-2014 01:53 PM
    • Replies: 1
    • Views: 497
    03-16-2014, 03:29 PM Go to last post
  40. Analysis of linear regression

    Hi guys, I am working on my dissertation and I stuck on basics... Can you please remind me few things. I've done linear regression of...

    Started by aleksss‎, 03-16-2014 04:37 AM
    • Replies: 0
    • Views: 501
    03-16-2014, 04:37 AM Go to last post
  41. Please Point Me To Resources I Can Use To Interpret This Data

    Okay, So there's this forum devoted to a communication-based game that, in each game, divides players into two different groups. The groups...

    Started by Psyche‎, 03-16-2014 02:42 AM
    • Replies: 0
    • Views: 470
    03-16-2014, 02:42 AM Go to last post
  42. Which test of reliability to use?

    Hi, I am unsure of if I am to use different tests of reliability for different types of data sought by the same questionnaire, or if one test may...

    Started by Riley‎, 03-13-2014 11:49 AM
    cronbach's alpha, data type, reliability test
    • Replies: 1
    • Views: 601
    03-15-2014, 10:46 PM Go to last post
  43. What do I do once I have found an order effect in a within subjects design?

    I have found an order effect in my repeated measures design and am having difficulty figuring out how to run further analyses that control for the...

    Started by kjm8675‎, 02-22-2014 01:22 PM
    • Replies: 4
    • Views: 771
    03-12-2014, 08:07 PM Go to last post
  44. Two way unrelated ANOVA

    Hi, I was wondering whether anybody could help me, i've ran the data in SPSS and can see I have found some significant findings. However I'm...

    Started by abcd123‎, 03-12-2014 04:23 PM
    • Replies: 0
    • Views: 426
    03-12-2014, 04:23 PM Go to last post
  45. Why impose equality constraints on the factor loadings?

    Hi all, I have a few basic SEM questions that I would love to get your feedback on: (1) I have recently read two articles where the authors decided...

    Started by myautumn28‎, 03-12-2014 12:57 PM
    • Replies: 2
    • Views: 749
    03-12-2014, 03:00 PM Go to last post
  46. Unequal Group Sizes

    Hello, I am presently examining questionnaire data and the two groups I am interested in examining are unequal: n = 25 and n = 118. The...

    Started by baddeleywm‎, 03-12-2014 04:35 AM
    • Replies: 4
    • Views: 772
    03-12-2014, 06:56 AM Go to last post
  47. Inter rater reliability (multiple raters, multiple items)

    Hello, I am struggling with inter rater reliability measure. I have measures of perceptions of different items performed by multiple raters....

    Started by Ted Brasil‎, 03-11-2014 06:08 AM
    • Replies: 0
    • Views: 648
    03-11-2014, 06:08 AM Go to last post
  48. please help with analysis confusion

    Hello Could you please help I am doing a study on leadership for my dissertation. I trying to find out which leadership style and the degree...

    Started by Codenamekid91‎, 03-09-2014 01:55 PM
    • Replies: 0
    • Views: 517
    03-09-2014, 01:55 PM Go to last post
  49. Question Power Analysis and Sample Size determination help!

    Hi all! I am new here so I hope my post is appropriate! I have searched the web and this forum and haven't been able to figure out how exactly...

    Started by carlyhylton‎, 03-08-2014 05:33 PM
    2 way anova, power analysis, psychology, sample size, sas
    • Replies: 5
    • Views: 813
    03-08-2014, 10:01 PM Go to last post
  50. Score for categorical data

    Hi! I'm looking for some method to create some kind of a general score for several categorical variables, all of them on Likert Scale. Any...

    Started by raphaelsaldanha‎, 03-05-2014 07:38 AM
    • Replies: 0
    • Views: 535
    03-05-2014, 07:38 AM Go to last post
  51. Unhappy Degrees of freedom don't match participants? (F-test)

    Hi everybody! I'm currently working on my Master thesis, which is going to be a meta-analysis (I hope..). Now me and my thesis partner ran into...

    Started by Jiske‎, 03-04-2014 07:32 AM
    • Replies: 4
    • Views: 1,681
    03-04-2014, 11:10 AM Go to last post
  52. Analysing Multiple Categorical Variables

    I am conducting a study about behavioural practices in a psychological setting (restrictive interventions). The purpose is to determine the...

    Started by Iainoh‎, 02-25-2014 06:10 AM
    • Replies: 8
    • Views: 876
    03-04-2014, 06:13 AM Go to last post
  53. One Factor Repeated Measures ANOVA questions

    Hi all, I have conducted a repeated measures ANOVA that has one factor with two levels. I also have a one between-subjects factor that has been...

    Started by GC92‎, 03-01-2014 08:58 AM
    anova, interpretation, one factor, psychology, regression, repeat measures, statisics
    • Replies: 1
    • Views: 712
    03-01-2014, 09:40 PM Go to last post
  54. Talking Rosenberg's Self-Esteem Scale

    I am working on my stats for a final year project and was wondering if anybody here could help answer a few questions? I am using SPSS. I am...

    Started by jcnimmer‎, 02-27-2014 12:14 PM
    • Replies: 2
    • Views: 1,680
    02-28-2014, 05:28 AM Go to last post
  55. If In doubt - which test is best? Para/non Para

    Hi, Which test is best to use with a small sample size? Parametric or non-parametric? (with even distribution), I've got a repeated measures...

    Started by Gpsych‎, 02-26-2014 01:52 PM
    non-parametric, small sample
    • Replies: 1
    • Views: 745
    02-27-2014, 11:20 PM Go to last post
  56. Which size effect with planned comparison?

    Hello. I couldn't find the answer to my question in the forum so sorry if it was already answered. I've conducted an ANOVA (repeated...

    Started by LeoN‎, 02-27-2014 03:36 AM
    • Replies: 0
    • Views: 565
    02-27-2014, 03:36 AM Go to last post
  57. Calculating effect size when conducting planned contrasts/comparisons

    Does anyone know how (if it is in fact possible) to calculate the effect size (say Cohen's d) between planned contrasts/comparisons? For example,...

    Started by Tanned Man‎, 02-25-2014 04:14 PM
    • Replies: 0
    • Views: 880
    02-25-2014, 04:14 PM Go to last post
  58. Reference to justify the use of bootstrap

    Dear all, My colleagues and I conducted a research involving a dichotomous outcome (i.e., the detection of an unexpected event in a particular...

    Started by Fgabarrot‎, 02-21-2014 12:10 AM
    binary dependent variable, bootstrap
    • Replies: 3
    • Views: 1,060
    02-24-2014, 02:14 PM Go to last post
  59. Question Reliability - ω Omega (total/hierarchical

    Hola! I would like to ask about the total (ωt) and hierarchical omega (ωh) as far as interpretation differences are concerned. And one more...

    Started by Martin Marko‎, 02-24-2014 12:17 PM
    • Replies: 0
    • Views: 11,936
    02-24-2014, 12:17 PM Go to last post
  60. Hierarchical multiple regression, from a forum and stats novice

    Hi, I have data from 584 people comprising five personality factors scored for each individual, and their reaction times on a test following random...

    Started by Buff Davis‎, 02-22-2014 01:20 PM
    • Replies: 0
    • Views: 520
    02-22-2014, 01:20 PM Go to last post

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