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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: 32,243
    11-10-2005, 12:21 AM Go to last post
  1. Need Help Determining Analysis for Likert Scale Data

    Hello, I need help determining what analysis to run. I have 2 independent variables (a control and experimental condition) with 4 dependent...

    Started by plshelpmewiththesis‎, Yesterday 03:36 PM
    analysis help, likert, likert items, likert scale, ordinal regression, regression
    • Replies: 5
    • Views: 110
    Today, 12:27 PM Go to last post
  2. Assessing sample-size after data collection

    Hi all! I ran a correlation study with the maximum sample size that was possible, and found some strong significant effects as well as non-signifiant...

    Started by felixg‎, 11-21-2017 01:18 PM
    • Replies: 3
    • Views: 126
    Today, 10:57 AM Go to last post
  3. Need help determining which statistical test to use

    I've been struggling to answer the results part for our experimental paper for weeks. I'm working part-time and none of my groupmates have enough...

    Started by Black wings‎, 11-17-2017 10:31 AM
    • Replies: 4
    • Views: 207
    11-17-2017, 09:50 PM Go to last post
  4. Testing the trajectory of response type - unsure of which analysis to use

    Hi everyone, Hoping someone might be able to help. I want to test a prediction that participants will progress through a trajectory of three...

    Started by analogicalmind‎, 11-11-2017 10:42 AM
    • Replies: 4
    • Views: 274
    11-14-2017, 10:29 AM Go to last post
  5. US response to "imaginary interference in their

    Oceania Sevens Championship 2017 Live Stream

    Started by jeanegegor‎, 11-09-2017 05:35 PM
    • Replies: 0
    • Views: 147
    11-09-2017, 05:35 PM Go to last post
  6. Multivariate outliers

    Hi everyone! I have a question about detecting multivariate outliers in a correlation analysis. I'm calculating Spearman correlations between 5...

    Started by mariap‎, 10-27-2017 03:33 AM
    • Replies: 0
    • Views: 247
    10-27-2017, 03:33 AM Go to last post
  7. To what extent are differences in levels of IV associated with many DVs?

    My independent variable consists of several different levels (working, sleeping, running etc.) and there are many dependent variables (heart rate,...

    Started by psy3076‎, 10-21-2017 04:24 PM
    • Replies: 0
    • Views: 231
    10-21-2017, 04:24 PM Go to last post
  8. Need URGENT help with analyzing the data from my study!

    EDIT: -SOLVED- -Spectre

    Started by Spectre‎, 10-20-2017 01:46 PM
    • Replies: 0
    • Views: 342
    10-20-2017, 01:46 PM Go to last post
  9. Reporting results p > .05 justified?

    Hi all, Recently I did a field study where I investigated recycling behaviour in the office. We did a baseline and post-intervention measurement...

    Started by DvdR‎, 10-19-2017 05:07 AM
    • Replies: 0
    • Views: 74
    10-19-2017, 05:07 AM Go to last post
  10. Test to measure interaction effects among factors on a dependent variable

    Hi all, I am a new Statistics learning (1st year graduate student) and I would appreciate your opinion on my research design to answer a specific...

    Started by Cj3‎, 10-17-2017 04:08 PM
    • Replies: 1
    • Views: 250
    10-18-2017, 08:47 AM Go to last post
  11. Book for HLM

    Hi everyone. Can anyone recommend a good book for studying HLM? Thanks for any help!

    Started by Shachar‎, 10-10-2017 08:38 AM
    • Replies: 5
    • Views: 276
    10-17-2017, 06:18 AM Go to last post
  12. Can I calculate Cohen's d on z scores?

    Hi everyone, I am trying to calculate the size of the difference between the means of two groups in a psychological test. However, I am not using...

    Started by css‎, 10-15-2017 08:16 AM
    • Replies: 0
    • Views: 299
    10-15-2017, 08:16 AM Go to last post
  13. p value of .051

    Hello everyone, If I have a p-value of .051 is considered over .05? Should I do not reject the null hypothesis? Thanks

    Started by Anna II‎, 10-09-2017 04:57 PM
    • Replies: 5
    • Views: 393
    10-10-2017, 05:13 PM Go to last post
  14. Which test to use for binary variables and concerns about multiple comparisons

    Hi all, I am working on a research project attempting to compare two groups of subjects' (call them A and B) brains based on MRI results. Let's...

    Started by mnd12‎, 09-28-2017 04:18 PM
    • Replies: 3
    • Views: 425
    09-28-2017, 09:14 PM Go to last post
  15. Discriminant Validity using Correlation Matrix

    Hi.. I need help regarding establishing discriminant validity of an adapted scale using the correlation matrix. Original scale had 36 items. I...

    Started by chhavimittal‎, 09-26-2017 11:29 PM
    • Replies: 0
    • Views: 277
    09-26-2017, 11:29 PM Go to last post
  16. measuring same variables for unrelated topics within subjects

    Hello everyone, Purpose of the study: I want to find out how the perceived competence and warmth of an activist group relates to whether someone...

    Started by eku‎, 08-23-2017 04:11 PM
    • Replies: 2
    • Views: 312
    09-25-2017, 10:42 AM Go to last post
  17. Regression with change scores

    I handled it. you can close to topic.

    Started by PsychologyS‎, 09-17-2017 05:31 AM
    • Replies: 0
    • Views: 394
    09-17-2017, 05:31 AM Go to last post
  18. Decision Making Attributes Statistical Significance Tests

    Hi All So I am looking for some advice regarding the best test to use for the scenario below (the data itself is not normally distributed and the...

    Started by Taygarr‎, 09-03-2017 12:26 AM
    • Replies: 1
    • Views: 649
    09-04-2017, 05:58 AM Go to last post
  19. A problem with covariates

    Hello everyone. I have a problem with covariates. I have a database with a mixed design, with a manipulation as a within-subject variable. Each...

    Started by Shachar‎, 08-25-2017 04:23 AM
    • Replies: 0
    • Views: 570
    08-25-2017, 04:23 AM Go to last post
  20. Bradley-Terry paired comparisons ranking with SPSS

    Hey everyone! I apologize if this is a repeated topic; I ran the search function in different browsers, but the function did not work. I would...

    Started by Labestia‎, 08-24-2017 07:16 AM
    • Replies: 0
    • Views: 559
    08-24-2017, 07:16 AM Go to last post
  21. Comparing the academic performance between two classes

    Compare the academic performance between two classes Dear all, I kindly need your help. Here is my background. I am a secondary school teacher....

    Started by lcy‎, 08-16-2017 07:55 PM
    • Replies: 6
    • Views: 585
    08-18-2017, 10:51 PM Go to last post
  22. Analysis, Thesis on Mindfulness

    Hey guys, I am currently struggling with identifying the appropriate statistical method for my bachelor thesis. Participants are measured over...

    Started by Lamb‎, 08-16-2017 06:53 AM
    anova, thesis
    • Replies: 3
    • Views: 428
    08-18-2017, 03:24 AM Go to last post
  23. correlation of age at onset of "sexual abuse" of minors and impairment

    Hello, I have a question about the following things: Some studies define sexual abuse of minors as unwanted sexual contacts before the age of...

    Started by Filip2017‎, 08-16-2017 11:40 AM
    • Replies: 1
    • Views: 245
    08-17-2017, 11:30 PM Go to last post
  24. Analysis part for thesis: Spearman‘s range correlation test?

    Dear Forum members, I kindly need your help in deciding what statistical method to use in the analysis part of my thesis. What measurements do I...

    Started by Leafe Leave‎, 08-15-2017 03:43 PM
    • Replies: 4
    • Views: 424
    08-16-2017, 05:57 AM Go to last post
  25. How to Model Multiple Responses?

    Dear All, I need your assistance in choosing the right analysis method. A sociological research came to see if there are relations between...

    Started by Yankel‎, 08-06-2017 06:31 AM
    • Replies: 0
    • Views: 449
    08-06-2017, 06:31 AM Go to last post
  26. Reliability Analysis for Ability Test (Signal Detection)

    Good day all, I have been tasked with working out the alpha for an ability test which measures only two factors: Median Reaction Time (in ms) and...

    Started by Xaos‎, 08-02-2017 01:42 AM
    ability, reliability analysis, spss
    • Replies: 0
    • Views: 314
    08-02-2017, 01:42 AM Go to last post
  27. Nine variable - Looking for a relationship

    Nope, not a dating advert, just looking for advise on some stats. I have 9 variables and looking to see if a relationship exists. Looking at...

    Started by Armaghgeddon‎, 07-25-2017 11:07 AM
    • Replies: 5
    • Views: 836
    07-25-2017, 02:54 PM Go to last post
  28. Graphing nonlinear results

    Not sure as newbie where to best post this question. A graph in a psychology article has a graph for survey scores. Would like to figure out formula...

    Started by saratogacoach‎, 07-20-2017 12:34 PM
    • Replies: 7
    • Views: 714
    07-22-2017, 05:59 PM Go to last post
  29. Filling in Anova Tables

    Hello, Can anyone provide a step by step example of how to go about filling in the missing areas in this Anova output table for my homework...

    Started by Stephie‎, 07-20-2017 08:15 PM
    • Replies: 0
    • Views: 457
    07-20-2017, 08:15 PM Go to last post
  30. Which test in SPSS should I use?

    I'm trying to work out whether there are relationships between two IVs and one DV (I'm not interested in correlations between IVs, though they may...

    Started by P3rs3ph0n3‎, 07-18-2017 08:51 AM
    • Replies: 0
    • Views: 1,300
    07-18-2017, 08:51 AM Go to last post
  31. blank spaces on SPSS output

    Hi, I am running a 2x3 repeated measures ANOVA. My IVs are both categorical variables and my DV is a continuous variable - score (out of 200). ...

    Started by charlie242‎, 07-13-2017 05:45 AM
    anova, output error, repeated measures
    • Replies: 0
    • Views: 675
    07-13-2017, 05:45 AM Go to last post
  32. Too many variables - Multivariate analysis of covariance - New to this

    Hi there. This will be my first post on the forums, I'm a Psychology student currently conducting research at an internship. We treat IDD...

    Started by griffin.625‎, 07-11-2017 03:31 PM
    covariance, multidimensional scaling, multivariate analysis, multivariate data sets, variable coding
    • Replies: 2
    • Views: 633
    07-11-2017, 05:19 PM Go to last post
  33. Power analysis for 3-way interaction with 1 between-, 2 within-subjects factors

    Hi all, I am trying to use G*Power 4 to compute the sample size that I will need to detect a 3-way interaction (2 x 2 x 2) in a mixed-effect ANOVA...

    Started by PEEP_lab‎, 07-10-2017 04:29 PM
    interaction terms, mixed anova, power analysis
    • Replies: 0
    • Views: 484
    07-10-2017, 04:29 PM Go to last post
  34. Multiple Scales within a Moderator

    Dear all, I am conducting a moderated multiple regression analysis for my research. One of my moderators comprises 5 different scales (with their...

    Started by milvucic‎, 07-10-2017 01:59 AM
    • Replies: 0
    • Views: 535
    07-10-2017, 01:59 AM Go to last post
  35. Mixed methods ANCOVA

    Hey, I wondered if anyone could help me out. I am trying to conduct an ANCOVA for my masters project and am confused on how to enter the data. So...

    Started by belladee‎, 07-09-2017 05:17 PM
    psychology, psychology statistics, spss
    • Replies: 0
    • Views: 356
    07-09-2017, 05:17 PM Go to last post
  36. Repeated measures with covariate

    Hi, My study design include two indepedent catagorial within-subject variables and six continuous dependent variables. First, I want to make...

    Started by PsychologyS‎, 06-30-2017 03:10 AM
    • Replies: 4
    • Views: 749
    06-30-2017, 12:58 PM Go to last post
  37. Confirmed model doesn't fit with different population. Should I return to EFA or not?

    I am trying to confirm the model for a 16-item measure. It has been confirmed for a homogeneous group, however, I want to determine if the model fits...

    Started by Jmwarren‎, 06-29-2017 02:43 PM
    cfa, efa
    • Replies: 1
    • Views: 387
    06-29-2017, 08:39 PM Go to last post
  38. Question about 3X3 repeated measures ANOVA and simple effects

    First time posting here. I have conducted a transcranial magnetic stimulation study and am analyzing the results as a 3x3 repeated measures ANOVA....

    Started by jcoetzee‎, 06-23-2017 04:43 PM
    interaction, repeated measure anova, simple effects, spss
    • Replies: 1
    • Views: 574
    06-24-2017, 08:59 PM Go to last post
  39. Question Let me know a better analysis method?

    I have two IVs; "collection method" (online and classroom) and "culture" (A and B), one continuous variable ("Age") and 8 DVs (well-being variables...

    Started by joonha35‎, 06-14-2017 08:55 PM
    group differences, t-tests
    • Replies: 13
    • Views: 1,327
    06-24-2017, 12:55 AM Go to last post
  40. Question regarding Repeated measures 3-way ANOVA for thesis

    Dear Readers, I am new to this forum and I have a question regarding my output/researchdata. I am currently analyzing my hypothesis with respect...

    Started by Naomiii‎, 06-22-2017 09:37 AM
    anova, bonferonni, ibm spss, p-value, repeated measures
    • Replies: 1
    • Views: 378
    06-23-2017, 04:36 PM Go to last post
  41. Need help with performing the correct analysis?

    I have: Two categorical Dependent Variables: Treatment(A, B), and Genotype (WT, HET). Two continuous Independent Variables: Latency (seconds),...

    Started by Jonnycbad‎, 06-14-2017 11:59 AM
    • Replies: 1
    • Views: 669
    06-14-2017, 01:16 PM Go to last post
  42. ANOVA und Cohens d`?

    Hi there! So, i did a psychological study where i tried to manipulate flow. In that study every subject had to play a racing game 6 times and...

    Started by hasenkuchen‎, 06-14-2017 06:12 AM
    • Replies: 1
    • Views: 557
    06-14-2017, 09:45 AM Go to last post
  43. Comparing a test vs gold standard in 4x4 matrix

    Hello everybody, I am trying to figure out how to measure the specificity and recall of a test I'm working in. The test is aimed to classify items...

    Started by AJLRB‎, 06-13-2017 04:24 AM
    • Replies: 0
    • Views: 617
    06-13-2017, 04:24 AM Go to last post
  44. Simple survey analysis questions

    Hello all, I've been asked to assist with the statistical analysis of some survey data, and I'm a bit of a novice with this type of analysis, so...

    Started by TefJLives‎, 06-11-2017 03:38 PM
    nonparametric tests, survey analysis, survey design
    • Replies: 0
    • Views: 2,000
    06-11-2017, 03:38 PM Go to last post
  45. Sampling in Randomized Evaluation

    I am designing an experiment in which the treatment is administered through information priming. I plan to conduct the experiment in a large city...

    Started by has70‎, 06-11-2017 03:19 PM
    randomized control trials, sampling plan
    • Replies: 0
    • Views: 497
    06-11-2017, 03:19 PM Go to last post
  46. Software to perform conjoint analysis

    What software supports conjoint analysis?

    Started by Meenakshi Tiwari‎, 06-11-2017 05:28 AM
    • Replies: 0
    • Views: 662
    06-11-2017, 05:28 AM Go to last post
  47. ANCOVA with dichotomous dependent variable - How?

    Hi everyone! I am a new subscriber with a little talent for statistics and I study developmental psychology :) I need to perform and ANCOVA on a...

    Started by PsychSilvia‎, 06-08-2017 08:29 AM
    • Replies: 3
    • Views: 734
    06-09-2017, 06:28 AM Go to last post
  48. Selecting test - please help

    Hi everybody, I am a master student doing my first quantitative analysis. I want to analyze if there is a relationship between a gender quota...

    Started by rmbrito‎, 06-06-2017 09:26 AM
    • Replies: 1
    • Views: 1,441
    06-07-2017, 05:07 AM Go to last post
  49. Question Is there any justification to treat a sum of ordinal scores as a ratio score?

    More than once, I noticed that researchers sum ordinal scores of e.g. items of a psychometric test to gain a total score. This score is e.g....

    Started by PDot312‎, 06-04-2017 04:08 PM
    • Replies: 1
    • Views: 868
    06-04-2017, 05:05 PM Go to last post
  50. Smile Multiple regression question

    Hello everyone, I cannotfind the solution to following question and dont really know how to exclude any alternative. We regress an outcome...

    Started by SweetValley‎, 06-01-2017 12:42 PM
    • Replies: 9
    • Views: 1,076
    06-02-2017, 10:39 AM Go to last post
  51. Help Please

    A local United Way and a group of community agencies in a large urban area have decided that making sure young children are ready to enter the school...

    Started by Ktina‎, 02-27-2017 08:30 PM
    • Replies: 2
    • Views: 2,161
    06-02-2017, 10:39 AM Go to last post
  52. Correcting for repeated testing with 4 mediation analyses?

    Hi guys, First time poster here, sorry if I post this at the wrong spot or something like that. For my thesis if have the following 4...

    Started by Yulir1993‎, 04-17-2017 11:00 AM
    bonferroni correction, mediation analysis, multiple testing, regression analysis, spss 23
    • Replies: 1
    • Views: 1,017
    06-02-2017, 02:32 AM Go to last post
  53. Testing differences between groups over time

    Hello, I am writing a research proposal that looks at a change in scores over time between three groups. Here is the basic set-up: Three...

    Started by bbphd17‎, 04-19-2017 09:56 AM
    • Replies: 1
    • Views: 1,296
    06-02-2017, 02:19 AM Go to last post
  54. iPod Track Listening & Biological Samples— Within-Subjects Test/Regression?

    I am analyzing data in which participants listened to iPods and provided biological samples on the same days. The iPod Listening Intervention was 1...

    Started by statshelp1312‎, 05-10-2017 11:40 AM
    biological statistics, ipod, regression analysis, within-subjects
    • Replies: 1
    • Views: 833
    06-02-2017, 02:07 AM Go to last post
  55. Which method shall I use?

    Dear All, first of all I would like to thank you for creating and running this forum. At least there is a place where desperado like me can ask...

    Started by Zürcherin‎, 05-08-2017 06:28 AM
    • Replies: 1
    • Views: 1,150
    06-02-2017, 02:03 AM Go to last post
  56. One way ANCOVA - Data failing assumption of linearity

    Hello I'm working on my Msc in Psychology thesis, and I've chosen to explore if there are group differences between Internal vs External...

    Started by claney‎, 05-11-2017 05:08 AM
    • Replies: 1
    • Views: 1,277
    06-02-2017, 01:56 AM Go to last post
  57. Paired sample t test vs Wilcoxon signed ranks test

    As part of assessment, we are using a five-question multiple choice pretest and posttest. We have been using the Wilcoxon signed ranks test to...

    Started by Sherrington‎, 05-19-2017 01:33 PM
    • Replies: 1
    • Views: 1,088
    06-02-2017, 01:52 AM Go to last post
  58. Justifying use of hierarchical multiple linear regression (MHLR)

    Hi, My research question is looking at the predictors of the transfer of training. I have performed a series of separate hierarchical...

    Started by EmmaL‎, 05-31-2017 10:58 AM
    • Replies: 0
    • Views: 613
    05-31-2017, 10:58 AM Go to last post
  59. Is it possible or meaningful to run an ANOVA on only two groups?

    Hi, we have been given a bunch of homework questions and i can't seem to work this one out. "Is it possible or meaningful to run an ANOVA on...

    Started by UnnieE‎, 05-30-2017 05:46 PM
    anova
    • Replies: 3
    • Views: 899
    05-30-2017, 09:52 PM Go to last post
  60. Forced choice test with six options - analysis

    Dear all, I had a profile here before, but I cannot access it anymore since I registered it on an e-mail I don't have anymore (since I changed...

    Started by Pikkuhirmulisko‎, 05-30-2017 04:41 AM
    • Replies: 0
    • Views: 766
    05-30-2017, 04:41 AM Go to last post

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