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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: 22,524
    11-09-2005, 11:21 PM Go to last post
  1. Likert Scale Data Question

    Hi! I am working with Likert Scale Data (1-5) collected for two different sets of subjects. We have data collected from one school, at two...

    Started by jamesmartinn‎, 07-23-2015 07:22 AM
    • Replies: 2
    • Views: 731
    07-27-2015, 10:24 AM Go to last post
  2. Red face Between Subjects Experimental Design- How to analyse

    I have conducted an experiment with 2 conditions, 50 people in each condition. Each person completed a booklet of tasks and self-report measures (the...

    Started by lc1505‎, 07-27-2015 09:39 AM
    between subjects, between-group differences, experiment, mediation, psychology
    • Replies: 1
    • Views: 455
    07-27-2015, 10:17 AM Go to last post
  3. Types of interactions

    Hi, I am stuggling to find the right words for the statistical terms I would like to look up. Hope, you can help :-) I am looking at a higher...

    Started by liquidmodernity‎, 07-24-2015 06:49 AM
    correlation, higher order construct, interaction
    • Replies: 2
    • Views: 625
    07-27-2015, 08:46 AM Go to last post
  4. Presentation and interpretation of frequency data

    I carried out a study which involved going through a pathological cohort of 97 patient case files retrospectively and rating whether 21 behavioural...

    Started by jen_‎, 07-23-2015 02:24 AM
    • Replies: 2
    • Views: 469
    07-23-2015, 12:27 PM Go to last post
  5. Advice on which statistical test

    Dear Stats Friends I am a UK Clinical Psychology Trainee carrying out a small (5000 words) service improvement project based on where I am on...

    Started by rosenmarsh‎, 07-14-2015 06:19 AM
    • Replies: 8
    • Views: 1,021
    07-20-2015, 04:13 PM Go to last post
  6. Chi square and player order as a variable

    Hi all, I am getting myself in a muddle trying to use chi square correctly and hoping someone here can help. I am trying to see if there is an...

    Started by crapwithstats‎, 07-16-2015 01:49 AM
    • Replies: 2
    • Views: 748
    07-17-2015, 01:27 AM Go to last post
  7. Interpretation and reporting of dummy variables in causal model (Amos/SEM)

    I am using Amos to conduct SEM. The model I am running has a control variable with several categories for religion. I've used dummy variables to...

    Started by Gia2‎, 07-14-2015 08:24 PM
    • Replies: 3
    • Views: 745
    07-15-2015, 05:54 PM Go to last post
  8. 2 x 3 (Repeated Measures?) ANOVA

    Hi guys! I would be very grateful if someone could just doublecheck my choice of data analysis. This is for a dissertation, and I do not have the...

    Started by somethingwithchocolate‎, 07-14-2015 05:58 AM
    2x3 design, repeated measures anova
    • Replies: 0
    • Views: 538
    07-14-2015, 05:58 AM Go to last post
  9. Help with interpretation

    Hi All, Here is what i need help with. I am working with small sample size and this is the result so far. X and Y are not correlated ; however,...

    Started by arps‎, 07-12-2015 06:22 AM
    correlation, multiple regression
    • Replies: 4
    • Views: 706
    07-13-2015, 11:08 AM Go to last post
  10. Comparing two groups with two data sets? Is multiple regression test conveniant

    Hi I was wondering if someone could direct me to the right area.. I have currently done my research, where I wanted to find out the causal...

    Started by fifa786‎, 07-12-2015 10:03 PM
    • Replies: 0
    • Views: 460
    07-12-2015, 10:03 PM Go to last post
  11. Comparing three percentages (not means) which test [spss]

    Hello I wonder if you can help I am having trouble working out which statistical test to use. I have conducted a TMS study with four participants....

    Started by AbbyBradWest‎, 07-11-2015 06:46 AM
    • Replies: 0
    • Views: 485
    07-11-2015, 06:46 AM Go to last post
  12. Chi Square and Effect Size - Too easy to manipulate data?

    Hello everyone, I have several statistics textbook at home and consulted multiple online sources but have not found an answer to this. First -...

    Started by vasso‎, 07-06-2015 08:46 AM
    • Replies: 8
    • Views: 1,275
    07-10-2015, 04:23 PM Go to last post
  13. 5 Factor Personality Traits and Employee Engagement

    Hello, I have just graduated, interning at a company and have been asked to find out what type of personalities we have here, and the relationship it...

    Started by thedonone‎, 07-07-2015 10:20 AM
    • Replies: 0
    • Views: 509
    07-07-2015, 10:20 AM Go to last post
  14. differences between different levels of ordinal variables (repeated measures)

    Hi all, I'm writing my thesis at the moment and I've come across a problem that I'm not sure how to solve. Maybe i'm just too focussed on it to...

    Started by nickdrenth1‎, 07-03-2015 06:37 AM
    • Replies: 1
    • Views: 634
    07-03-2015, 08:57 AM Go to last post
  15. imputation on ordinal varibales (likert scale) missing values

    We have some survey data, and some questions were left answered. When I tried to do multiple imputation, I got the message: The imputation model...

    Started by fengyuwuzu‎, 07-01-2015 09:59 AM
    • Replies: 3
    • Views: 857
    07-02-2015, 10:16 AM Go to last post
  16. Big Data

    In a surveillance society, are there now computer-aided methods way more sophisticated than Factor Analysis such that no piece of info about any...

    Started by Outlier‎, 06-14-2015 01:47 PM
    • Replies: 10
    • Views: 1,878
    07-01-2015, 12:12 PM Go to last post
  17. normality problem

    I have 15 dependent variables on on IQ measure am using in my study but after checking for skewness and kurtosis two of them are not normally...

    Started by miezahdaniel‎, 06-29-2015 05:16 PM
    issue., normality
    • Replies: 3
    • Views: 711
    06-29-2015, 06:32 PM Go to last post
  18. comparing two independent binomial data sets, unequal size, Welchs t-test?

    I would like to compare the pass rates of two different classes (say English 111 and English 113). The data is binomial (0= fail, 1=pass). The sets...

    Started by thankyou‎, 06-27-2015 07:59 PM
    binomial data, educational measurement, welch's t-test
    • Replies: 3
    • Views: 992
    06-29-2015, 10:02 AM Go to last post
  19. HELP! 4x2 Mixed Design ANOVA Post Hoc Tests

    Hi all, I'm a PhD student and for my most recent study I conducted a 4 (experimental condition) x 2 (emotion type) mixed design ANOVA with...

    Started by nerdlynoel‎, 06-29-2015 09:19 AM
    anova, mixed design, post hoc tests, reporting results
    • Replies: 0
    • Views: 505
    06-29-2015, 09:19 AM Go to last post
  20. dependence of measures

    What to do with lack of independence in measures? What would you do if there's a correlation among measures? I am comparing a group of 20...

    Started by Mriazi‎, 06-27-2015 04:36 PM
    • Replies: 1
    • Views: 447
    06-28-2015, 02:28 AM Go to last post
  21. grouping participants together to form 1 group

    Hi sorry for the silly question:shakehead but I need some help I have 3 groups of participants in groups A, B and C but due to the small population...

    Started by cindz‎, 06-27-2015 11:04 AM
    • Replies: 0
    • Views: 450
    06-27-2015, 11:04 AM Go to last post
  22. SEM modelers and R users: lavaan, sem or OpenMX?

    hey out there to all SEM and R users... just wanted to conduct a quick, informal poll about which R package do people consider is the best suited to...

    Started by spunky‎, 01-23-2012 04:38 PM
    • Replies: 10
    • Views: 9,057
    06-26-2015, 09:08 AM Go to last post
  23. Relationship between 2 measures - simple correlation or which test?

    Hi, I would like to know if 2 measures are related or not across development - this is my question. I have 8 developmental age groups (from 5...

    Started by doro‎, 06-26-2015 06:45 AM
    • Replies: 0
    • Views: 451
    06-26-2015, 06:45 AM Go to last post
  24. Please help analysis between Nominal and interval Value in Excel

    I first want to say that this is my first post so sorry if I put it in the wrong topic, second English isn't my mother tongue so sorry as well for...

    Started by mausie94‎, 06-24-2015 06:11 PM
    • Replies: 1
    • Views: 519
    06-25-2015, 04:35 PM Go to last post
  25. Factor Analysis Repeated Measure ANOVA Between Subjects

    I conducted an experiment with 199 participants with each exposed to 36 different image and sound combinations (12 images x 4 sounds). They rated...

    Started by markas101‎, 06-24-2015 10:46 AM
    • Replies: 0
    • Views: 483
    06-24-2015, 10:46 AM Go to last post
  26. Cool Factor analysis with Likert-scale justifiable or not in this situation?

    Hello my name is Ramon, and I'm new to the forum, I'm currently finishing my master's thesis, and have a question about one of my analyses. ...

    Started by Ramon‎, 06-24-2015 03:14 AM
    • Replies: 1
    • Views: 490
    06-24-2015, 05:48 AM Go to last post
  27. The effects of transforming skewed data

    Hi There, I would like to know more about transforming data. I know that for parametric statistics data needs to be normally distributed, but I am...

    Started by Zenstone55‎, 06-22-2015 04:23 AM
    kurtosis, normal distribution, skew, transformation
    • Replies: 3
    • Views: 568
    06-22-2015, 09:42 AM Go to last post
  28. repeated measure ancova

    Hi, I do have a rather simple question but could not find a direct answer on other forums. I ran a repeated measures ancova with time (2) as...

    Started by sinaSW‎, 06-20-2015 12:16 AM
    ancova, covariate, repeated-measures
    • Replies: 3
    • Views: 835
    06-20-2015, 05:25 PM Go to last post
  29. Help with botched thesis data and analysis design

    Hi, I need help making sense of what I can do to analyze the data I have for my thesis. I was conducting a mixed methods study within a school to...

    Started by obiwankenobi‎, 06-16-2015 05:09 PM
    • Replies: 2
    • Views: 488
    06-19-2015, 09:37 PM Go to last post
  30. Advice appreciated

    I am looking at conducting some initial exploratory research and I am considering which tests to use for analyses of the quantitative data - but I am...

    Started by liampatrick‎, 06-04-2015 08:11 AM
    • Replies: 1
    • Views: 490
    06-19-2015, 09:09 PM Go to last post
  31. difference between item parceling and factor analysis?

    I seldom see people use item parceling but heard a lot of factor analysis. what is purpose of item parceling?

    Started by fengyuwuzu‎, 06-18-2015 09:04 AM
    • Replies: 0
    • Views: 450
    06-18-2015, 09:04 AM Go to last post
  32. Dividing a variable in three groups, what method to use?

    Hi all, For my research, I had all my respondents fill in a quiz and I calculated their scores (ranging from 0 to 10). I want to divide the whole...

    Started by Johan12345‎, 06-17-2015 09:13 AM
    • Replies: 0
    • Views: 327
    06-17-2015, 09:13 AM Go to last post
  33. Bonferroni Adjustment and Assumptions

    Hello, I'd just like to get clarification on something. When you perform a bonferroni adjustment (dividing the alpha level by the amount of tests...

    Started by Jake-Finn‎, 06-09-2015 02:30 PM
    • Replies: 3
    • Views: 820
    06-15-2015, 08:22 AM Go to last post
  34. Model-based cluster analysis in spss?

    Greetings everyone. I recently conducted a study on attitude towards pain and psychopathy. I gathered the data of 609 participants on the PPI-SF...

    Started by durand4‎, 06-11-2015 12:47 PM
    • Replies: 0
    • Views: 570
    06-11-2015, 12:47 PM Go to last post
  35. Smile Test for predictions/likelihood

    Hi All! I have two vaiables: 1) Collision with a lead vehicle (Yes/No) and 2) Reaction Time (Scale). I'd like to know whether, in SPSS, there is a...

    Started by tyronlouw‎, 06-05-2015 07:12 AM
    • Replies: 1
    • Views: 624
    06-05-2015, 01:23 PM Go to last post
  36. Relative measure in a questionnaire

    Hello everyone, I have a psychological questionnaire which deals with people's satisfaction from life. The questionnaire is build from several...

    Started by Yankel‎, 06-03-2015 10:43 PM
    • Replies: 0
    • Views: 449
    06-03-2015, 10:43 PM Go to last post
  37. Reliability between sets - is the intraclass correlation coefficient appropriate?

    Hi, I am having trouble applying the ICC to data I have collected for my Masters thesis. I have collected 8 sets (of 30 samples) from 40+...

    Started by Dubzy‎, 05-25-2015 03:24 PM
    agreement, icc, intraclass correlation, reliability
    • Replies: 1
    • Views: 491
    06-03-2015, 11:35 AM Go to last post
  38. Red face Test for association: Categorical data vs Continuous data

    Hi! I am trying to understand whether and what statistical test I can carry out in SPSS to see if there is an association between two independent...

    Started by tyronlouw‎, 06-03-2015 05:24 AM
    • Replies: 2
    • Views: 475
    06-03-2015, 05:35 AM Go to last post
  39. Replication: Strange flip of signs in regression

    Dear all, I have successfully run an experiment 2 times. I predicted an interaction between a dummy variable (intervention 1-yes/0-no) and a...

    Started by RBOON‎, 06-03-2015 03:46 AM
    ancova, flip, regression, signs
    • Replies: 0
    • Views: 329
    06-03-2015, 03:46 AM Go to last post
  40. Help with test selection for study

    Hi everyone, I'm looking for some help around the appropriate test selection, since I am collecting my own data. Here is some background: 1....

    Started by thedeepsays‎, 05-28-2015 01:07 PM
    • Replies: 2
    • Views: 699
    06-02-2015, 09:57 PM Go to last post
  41. how to do a contrast analysis for an interaction between two within subjects effects?

    Hello! I have a quite simple data pattern but find it hard to test a specific contrast I expected. I have 2 within subjects factors, each with two...

    Started by marie‎, 01-10-2012 03:40 PM
    2 Pages
    1 2
    contrast analysis, interaction, manova, repeated measures anova
    • Replies: 27
    • Views: 8,640
    06-01-2015, 05:45 PM Go to last post
  42. Regression analysis to compare groups

    I recently submitted a paper in which I split scores on a psychometric variable at the mean to produce high and low score groups and then used...

    Started by swavv‎, 05-31-2015 10:54 PM
    • Replies: 1
    • Views: 544
    06-01-2015, 12:57 AM Go to last post
  43. Preliminary data analysis for Logistic regression - Help please!!!

    Hi everyone, I am stuck at the preliminary analysis of my data and I need your ideas and help please. Here a small overview of my study: 1....

    Started by Piamialia‎, 05-30-2015 05:50 PM
    • Replies: 0
    • Views: 816
    05-30-2015, 05:50 PM Go to last post
  44. Testing for Attrition Bias, within/between? Type 1 Error, Bonferroni Adjustment

    Hello, My study consists of one IV (group treatment). A main treatment, and a control treatment, and four DVs (mental health measures,...

    Started by Jake-Finn‎, 05-28-2015 05:45 AM
    • Replies: 2
    • Views: 517
    05-28-2015, 07:50 AM Go to last post
  45. Help required for service evaluation project - t-tests v correlation and multiple reg

    Good morning, I am running a service evaluation project looking at two outcome measures. I have attached a 2 page document which explains the...

    Started by jessbuttery‎, 05-28-2015 04:45 AM
    • Replies: 1
    • Views: 426
    05-28-2015, 06:25 AM Go to last post
  46. Help with our data analysis (which one?!)

    Hey folks, hope this is the right place... Ok, so we aren't completely sure if we have the right data analysis type, so it would be awesome if you...

    Started by princessconsuela‎, 05-25-2015 10:29 PM
    • Replies: 2
    • Views: 589
    05-26-2015, 06:12 AM Go to last post
  47. mean+/-2.5 sd to remove outliers

    Hi everybody. I'm looking for a smart answer to this question: "Provide a justification of using 2.5 standard deviation (and not 3 o 2) for...

    Started by Tan‎, 05-24-2015 01:24 PM
    • Replies: 1
    • Views: 939
    05-26-2015, 06:01 AM Go to last post
  48. Homogeneity Of Variances assumption in ANOVA use Levene's AND Box's test?

    Hello, I am carrying out a Mixed between-within subjects analysis of variance, following Pallant's (2011) instructions. The chapter I am...

    Started by Jake-Finn‎, 05-23-2015 12:23 PM
    • Replies: 2
    • Views: 1,106
    05-25-2015, 03:43 PM Go to last post
  49. Bonferroni Adjustment/Correction and Confidence Intervals

    Hello, I have two questions here. RESOLVED (for now): You perform the bonferroni for multiple tests and/or multiple comparisons. FIRST: I...

    Started by Jake-Finn‎, 05-14-2015 09:39 AM
    bonferroni
    • Replies: 13
    • Views: 2,051
    05-25-2015, 12:23 PM Go to last post
  50. Query on sample sizes and cases in each cell

    Hello, Very simply, I am unsure what a cell means in this context, and would like a clarification. So, I have conducted a study. Before I did...

    Started by Jake-Finn‎, 04-30-2015 06:57 AM
    • Replies: 4
    • Views: 834
    05-24-2015, 06:35 PM Go to last post
  51. Difficult Ranking/Regression Problem

    Hello. I am trying to work out how well a number of independent variables predict the probability of being perceived to be good at a certain task. ...

    Started by proboscus‎, 05-20-2015 12:36 PM
    • Replies: 0
    • Views: 484
    05-20-2015, 12:36 PM Go to last post
  52. HLM- daily diary data for lagged analyses, controlling for DV at t-1?

    Hi all, I have a dataset that consists of daily observations (21 days) of people's daily general mood and daily life satisfaction. I am interested...

    Started by Marissa4USA‎, 05-19-2015 04:51 PM
    • Replies: 2
    • Views: 775
    05-19-2015, 11:27 PM Go to last post
  53. really dumb/basic question about repeated-measures design

    Let's say I did a repeated-measures experiment with 2 conditions and I counterbalanced. If my data were in SPSS, what would be the easiest/usual way...

    Started by bruin‎, 05-18-2015 12:26 PM
    • Replies: 0
    • Views: 416
    05-18-2015, 12:26 PM Go to last post
  54. reporting mixed anova and bonferroni

    I need help with reporting factorial mixed ANOVA's for a research report that I've been tasked with and have been given no information for reporting...

    Started by akindrat18‎, 05-18-2015 09:28 AM
    • Replies: 0
    • Views: 433
    05-18-2015, 09:28 AM Go to last post
  55. No post-hoc tests for Mixed between-within subjects ANOVA aka split-plot ANOVA ?

    Hello, I am performing some "mixed between-within subjects ANOVAs" aka "split-plot ANOVAs" aka "SPANOVAs". I am following Pallant 2011. ...

    Started by Jake-Finn‎, 05-14-2015 02:45 PM
    • Replies: 4
    • Views: 623
    05-15-2015, 12:37 PM Go to last post
  56. Paired/Matched Sample Question

    Hello Everyone, I would greatly appreciate some help with this question. I am trying to help a good friend with her dissertation and am now...

    Started by psycgirl‎, 05-14-2015 05:04 PM
    • Replies: 0
    • Views: 396
    05-14-2015, 05:04 PM Go to last post
  57. Exclamation Help on stats for research model needed

    I am in need of a quick statistical advice for a study I planned, and I hope you can help me a bit with it. I'd really appreciate your expertise. The...

    Started by yasho1984‎, 04-24-2015 05:15 AM
    • Replies: 6
    • Views: 953
    05-11-2015, 03:51 AM Go to last post
  58. Question z scores to percentiles

    Question 5 Identify the case with the lowest z score. Refer to Appendix A in the Warner (2013) text. Interpret the percentile rank of this z score...

    Started by amhcmh‎, 05-01-2014 06:05 PM
    • Replies: 3
    • Views: 2,907
    05-08-2015, 03:19 PM Go to last post
  59. Different number of cases for each participant - correlate with background data?

    I'm new to statistics so sorry about my lack of knowledge, but hey that's why I'm here! I have a long data set containing cases of survey...

    Started by King Ding‎, 05-05-2015 02:26 AM
    • Replies: 4
    • Views: 544
    05-05-2015, 06:36 AM Go to last post
  60. Repeated measures ANOVA; missing data and multiple measures at each time point

    Hi TalkStats I have data from a project. The data is the blood pressure for each participant at day of "baseline" visit, and 3 time points after...

    Started by lb5962‎, 04-27-2015 05:27 AM
    anova, medical statistics, missing data, repeated measures anova
    • Replies: 2
    • Views: 904
    04-27-2015, 09:19 AM Go to last post

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