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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: 19,028
    11-09-2005, 11:21 PM Go to last post
  1. Exclamation Discrepancy between Chi-square and sensitivity and specificity

    The performance of 19 impaired and 42 typically developing children was tested using 3 assessment parameters to see which parameter best...

    Started by Naomiyiftach‎, 07-24-2016 08:14 PM
    chi-square, chi-square help, diagnostic accuracy
    • Replies: 3
    • Views: 100
    Yesterday, 08:32 AM Go to last post
  2. How to convert two different types of measurement (both in ms) to run a MANOVA?

    I measured reaction time and movement time in an experiment (within-subjects measures) and want to run a MANOVA in SPSS with these measures as the...

    Started by Poppy1‎, 07-19-2016 09:25 PM
    repeated measures manova, spss, z-scores
    • Replies: 2
    • Views: 288
    07-20-2016, 08:46 PM Go to last post
  3. Question Study design flaw - no participant IDs.

    Hi :wave:, I have been asked to do the statistical analysis aspect on a mixed methods study that was supposed to follow a pre/post analysis...

    Started by dublinguy‎, 07-18-2016 02:42 PM
    flaws, participants number, pre post, spss, study design
    • Replies: 5
    • Views: 232
    07-18-2016, 06:35 PM Go to last post
  4. Data screening for regression analysis

    I am currently attempting an assessment for my Psychology MSc but am a little confused by the screening required. I have three independent...

    Started by Missjeevious‎, 07-15-2016 03:24 PM
    • Replies: 4
    • Views: 212
    07-16-2016, 09:40 PM Go to last post
  5. Analyzing Sleep and Productivity Data

    You are given data that stores the hours that an individual slept every night between the data's start and end points. You are also given the...

    Started by c_harris‎, 07-12-2016 06:03 PM
    data analysis
    • Replies: 3
    • Views: 210
    07-13-2016, 11:17 AM Go to last post
  6. Interpreting findings in Behavioural Science Journal

    Hi everyone, I've been trying my best to think about how to put this problem across. The authors of the paper said they used a multinomial logits...

    Started by WebberNaturals‎, 07-11-2016 11:35 AM
    • Replies: 0
    • Views: 99
    07-11-2016, 11:35 AM Go to last post
  7. Red face The Best Statistical Analysis Method and How to calculate number of participants

    Hello all! I have a research design : As it can be seen A, B, C are independent variables; D is a mediator and E is the dependent...

    Started by Ayfer‎, 07-09-2016 12:59 PM
    • Replies: 4
    • Views: 239
    07-10-2016, 02:19 AM Go to last post
  8. Psychology Statistics Help!!!

    I need help with 3 exercises!!! I am attaching the problems. Numbers 2,4 and 8!

    Started by ALogan0623‎, 07-08-2016 01:02 PM
    • Replies: 1
    • Views: 176
    07-08-2016, 01:16 PM Go to last post
  9. two way anova?

    Hello. I am hoping you may be able to help me understand why this is a two-way anova (it is possible it isn't) The assignment gives the following...

    Started by ryancpalmer‎, 07-07-2016 11:10 AM
    • Replies: 2
    • Views: 143
    07-08-2016, 08:31 AM Go to last post
  10. Which stats test would be best to use?

    I've got an emotional recognition task. There are 3 emotions (disgust, sad, fear), each with 10 different intensities. I only have 1 group (the...

    Started by psem‎, 07-08-2016 05:47 AM
    • Replies: 1
    • Views: 95
    07-08-2016, 08:17 AM Go to last post
  11. Which statistical test should be used?

    Take a quiz and refresh your knowledge in selecting the appropriate statistical test/procedure to answer a given research question. This...

    Started by dlak‎, 07-07-2016 03:08 PM
    data analysis, quantitative research, research methods, research questions, statistical analysis
    • Replies: 0
    • Views: 143
    07-07-2016, 03:08 PM Go to last post
  12. Reporting Binomial Fully

    Hi All! I have completed a number of binomial distributions with published results for my PhD thesis - however I only reported the binomial p...

    Started by claireth‎, 07-05-2016 05:43 AM
    • Replies: 0
    • Views: 173
    07-05-2016, 05:43 AM Go to last post
  13. What is the chance of finding a partner ?

    Hello I am a short film maker who knows nothing about stats. I stumbled across a silly white paper by Peter Backus, that seems to be quite famous...

    Started by chlowden‎, 02-02-2016 04:10 AM
    • Replies: 4
    • Views: 296
    07-03-2016, 12:15 PM Go to last post
  14. Smile What is the appropriate test for testing the difference between 3 variables?

    Hi all, I have a group of n subjects. Each subject has 3 measurements x, y, and z. 1-What kind of statistical analysis I should perform to see...

    Started by zeydabadi‎, 06-29-2016 12:18 PM
    anova, ttest
    • Replies: 3
    • Views: 293
    06-30-2016, 01:37 AM Go to last post
  15. Question Pearson VS Spearman Choosing and interpreting the test

    Hello, I need to fix the problem choosing and interpreting the correct statistical test for my data. I have data from (a) Minnesota Job...

    Started by Alanky‎, 06-29-2016 05:47 AM
    pearson, quantitative research, spearman, spss, statistical test
    • Replies: 1
    • Views: 203
    06-29-2016, 08:38 AM Go to last post
  16. multidimensional scaling (with clusters)

    I am writing my bachelor's thesis which was based on a study by Buma, Bakker and Oudejans (2014). Unfortunately I just realised that I misinterpreted...

    Started by Kaia_4‎, 06-13-2016 12:14 PM
    • Replies: 11
    • Views: 343
    06-29-2016, 04:00 AM Go to last post
  17. Experimental design: find the deviant

    I have a group of trained raters for speech recordings, their rating should be based on the content. not by the gender of the speech. I want to run a...

    Started by pancy‎, 06-27-2016 12:24 AM
    • Replies: 0
    • Views: 167
    06-27-2016, 12:24 AM Go to last post
  18. Non-Normality - Measuring of stereotypes

    Hello :) I'm researching a moderated mediation (2x2) with two mediators. To test my MANOVA and moderated mediation I have to check the normality...

    Started by yologer‎, 06-26-2016 03:43 PM
    manova, normality
    • Replies: 0
    • Views: 132
    06-26-2016, 03:43 PM Go to last post
  19. Guidance for type of statistical test to use

    I am self doubting myself as I have been looking at this screen for too long. I am interested in testing emotion discrimination in adults using a...

    Started by sAL2016‎, 06-24-2016 08:59 PM
    • Replies: 1
    • Views: 203
    06-24-2016, 11:32 PM Go to last post
  20. Deleting outliers to boost correlation. A sound practice?

    Dear all, I have two measures with a correlation of .20, the sample size is 210. I expected a higher correlation. I deleted around 60 outliers and...

    Started by Anthony_1000‎, 06-24-2016 03:48 AM
    • Replies: 5
    • Views: 282
    06-24-2016, 06:25 PM Go to last post
  21. Bonferroni vs. Modified Bonferroni

    Hello, I was wondering if anyone knows when it is appropriate to use a Bonferroni correction over a Modified Bonferroni correction? Thanks :)

    Started by StatStud1‎, 06-17-2016 11:18 PM
    • Replies: 1
    • Views: 351
    06-18-2016, 07:24 AM Go to last post
  22. Factor analysis

    Hello! Apologies if the answer is very obvious but i am new to this. I am running an exploratory factor analysis for a scale developement study....

    Started by LEMONIAS‎, 06-07-2016 01:17 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 1,901
    06-15-2016, 06:34 PM Go to last post
  23. Post Help me (Bachelor Project) Rank Order Scale

    hi, i am from indonesian sorry for bad ENGLISH grammar. i have problem with Rank Scale Order. so here we go, i have questionnaire for 10...

    Started by cybercutte‎, 06-13-2016 04:37 AM
    • Replies: 1
    • Views: 174
    06-13-2016, 12:04 PM Go to last post
  24. Survey item analysis, two ways to report low rated items. Is my friend wrong?

    My friend and I analyzed the same data but came up with two different sets of results :shakehead . I'd like help to understand why. Situation:...

    Started by Michael T‎, 06-09-2016 04:47 PM
    analysis, likert items, likert scales
    • Replies: 1
    • Views: 171
    06-09-2016, 07:41 PM Go to last post
  25. parametric or non-parametric in comparison of a dependent variable within several gro

    down vote favorite I am comparing maths and chemistry scores of students in several schools. I am not comparing the schools with each other. I am...

    Started by tabrizbalasi‎, 06-09-2016 04:15 PM
    nonparametric, normal distribution, normality, parametric
    • Replies: 0
    • Views: 121
    06-09-2016, 04:15 PM Go to last post
  26. How often is the null hypothesis true in psychology?

    Hullo all, Something that I'm really interested in is the question of what should be the "default" form of statistical analysis used by everyday...

    Started by CowboyBear‎, 04-17-2016 12:08 AM
    2 Pages
    1 2
    • Replies: 29
    • Views: 1,073
    06-08-2016, 09:30 PM Go to last post
  27. Meta-analysis to compare 3 randomized control trials?

    I'm proposing to evaluate an outcome in three completed randomized controlled trials. The primary goal is to analyze a new outcome in each data set...

    Started by ACAD‎, 06-07-2016 11:15 PM
    manova, meta-analysis, randomized control trials
    • Replies: 0
    • Views: 152
    06-07-2016, 11:15 PM Go to last post
  28. Lightbulb Studying the combined effects of mothers and fathers depression on child outcomes

    Hello everyone! I am new here and am really needing some advice on what is the best statistical method to use for my doctoral research. The...

    Started by rachrach‎, 06-07-2016 01:40 PM
    combined effects, dyadic data, family data, multilevel modelling
    • Replies: 1
    • Views: 166
    06-07-2016, 03:06 PM Go to last post
  29. How to analyze categorical data with repeated measures?

    Dear all, I struggle with the analysis of my data and thought someone here has a suggestion for me. I measured the categorical responses in a...

    Started by footos‎, 06-07-2016 10:51 AM
    • Replies: 0
    • Views: 119
    06-07-2016, 10:51 AM Go to last post
  30. Two-way or one-way MANOVA?

    Hi all! I'm struggling with the following design: I had 257 respondents filling in my survey with a manipulated website. The website was...

    Started by Rob1913‎, 06-07-2016 06:41 AM
    manova; two-way; one-way
    • Replies: 3
    • Views: 196
    06-07-2016, 09:03 AM Go to last post
  31. Interpreting repeated measures ANOVA results in Intervention Study

    I'm having one of those late night working problems, where I'm suddenly second guessing all my work and I seem to have lost all my statistics...

    Started by cait‎, 04-06-2016 12:49 AM
    intervention, repeated measures
    • Replies: 3
    • Views: 321
    06-06-2016, 06:51 AM Go to last post
  32. Identify Outlier

    Hi, I need help to identify outlier for my research project :) Model: 2x2 moderated mediation 1.) IV: both are nominal (rich vs. poor & public...

    Started by yologer‎, 06-02-2016 06:25 PM
    mediation, moderated, outlier
    • Replies: 2
    • Views: 239
    06-04-2016, 05:49 PM Go to last post
  33. Question Choosing the right statistical analysis for my research

    Hi all, I was wondering if anyone could help me. I'm struggling to figure out which type of analysis I need to use for my research: I have 900...

    Started by lzid‎, 06-03-2016 07:42 AM
    • Replies: 2
    • Views: 225
    06-04-2016, 04:41 AM Go to last post
  34. Methods and Data Analysis for Experimental Study Design

    Good day! I am working on my methods section for my dissertation proposal and want to ensure I am thinking through my methods and data analysis...

    Started by CupcakeKat‎, 06-02-2016 02:54 PM
    data analysis, manova, research design
    • Replies: 2
    • Views: 276
    06-03-2016, 06:54 PM Go to last post
  35. calculating variance of mean proportions for meta-analysis

    We aim to do a meta-analysis on mean proportions using. Thus, individual proportions (accuracy scores) within a study are already averaged to a mean...

    Started by Anne Fleur‎, 06-03-2016 07:08 AM
    • Replies: 1
    • Views: 158
    06-03-2016, 11:51 AM Go to last post
  36. Reporting participant numbers for meta analysis

    Hi there, I am hoping you may be able to help me with a query I have. I am conducting a meta analysis on Random Control Trials using REVMAN. I...

    Started by tcr‎, 06-01-2016 11:40 AM
    means, meta analysis, population, revman, standard deviation
    • Replies: 2
    • Views: 173
    06-03-2016, 07:31 AM Go to last post
  37. How to adjust means?

    I have two teachers giving marks to two groups of students in one class.I find that one of the teachers is more lenient in marking therefore he gives...

    Started by pancy‎, 05-24-2016 11:06 PM
    • Replies: 3
    • Views: 206
    06-01-2016, 11:05 PM Go to last post
  38. Question about performing ANOVA

    Hello Everyone! I am Andrew and i am a new member! I have conducted my own research and i am about to report the results and i would appreciate...

    Started by Kantekas‎, 05-29-2016 01:06 PM
    • Replies: 3
    • Views: 282
    05-29-2016, 04:18 PM Go to last post
  39. Compare means of subgroups of same population

    Hi :wave: I tested life satisfaction on a sample of 500 respondents. In the same questionaire I also tested whether the respondent was a smoker or...

    Started by guszfraba‎, 05-27-2016 02:15 PM
    • Replies: 2
    • Views: 258
    05-27-2016, 03:54 PM Go to last post
  40. Question Please help: ANOVA

    I'm asking a group of young people who have experienced loss to complete the Posttraumatic Growth Inventory and then a sheet about different factors...

    Started by bremner‎, 05-25-2016 07:05 AM
    anova, sample size, test
    • Replies: 2
    • Views: 200
    05-27-2016, 01:28 PM Go to last post
  41. Question Help with Nested Design

    Hello members, I'm hoping you astute scholars can help me with a stat problem that I can't figure out. I'm stuck at one part of the analysis,...

    Started by rothers27‎, 05-25-2016 12:13 PM
    • Replies: 1
    • Views: 188
    05-26-2016, 11:44 AM Go to last post
  42. Designing a chi square test

    Hi, I have some doubts about designing in the most correct form a chi-square test. In my experiment, I used 41 visual stimuli (pictures), which...

    Started by giggia1987‎, 05-25-2016 09:59 AM
    • Replies: 0
    • Views: 136
    05-25-2016, 09:59 AM Go to last post
  43. Repeated Measures Design & Effect Sizes, Normality

    My question is about calculating effect sizes for a repeated measures design with a small sample size. I want to calculate Cohen's d.av (as...

    Started by gradstudent1507‎, 05-21-2016 05:40 PM
    effect size
    • Replies: 1
    • Views: 209
    05-22-2016, 06:25 AM Go to last post
  44. t-test: very odd p value..

    Hello, I have a strange p value and I am not sure how to interpret it: t = 5.3592, df = 46.353, p-value = 2.56e-06 Anyone know what to do...

    Started by Ted1234‎, 05-19-2016 07:26 PM
    • Replies: 5
    • Views: 378
    05-20-2016, 09:05 AM Go to last post
  45. Comparing two means of small sample groups - which statistic should I use?

    Hello, As I am struggling a bit with the statistics part of my bachelors thesis, I would appreciate your help and opinions a lot! I've got two...

    Started by Snape_lape‎, 05-17-2016 10:44 AM
    permutations test
    • Replies: 4
    • Views: 305
    05-18-2016, 09:28 AM Go to last post
  46. Question Analysis of rhythm precision - Which test should I use?

    Greetings everyone, I am currently analysing the data which I gathered from my master thesis experiment. My experiment involves measurements of...

    Started by Thorgeir‎, 05-16-2016 08:58 AM
    rhythm method, rhythm precision
    • Replies: 0
    • Views: 227
    05-16-2016, 08:58 AM Go to last post
  47. Organizing data within SPSS for 2x2x2 repeated measures ANOVA

    Hello, I have some data derived from a 2x2x2 experimental design. There are 3 IV's, each with 2 levels. My DV is reaction time (measured in...

    Started by Ted1234‎, 05-14-2016 05:00 PM
    • Replies: 0
    • Views: 244
    05-14-2016, 05:00 PM Go to last post
  48. Exclamation HELP PLEASE- Correlation between groups

    My objective is to see if there is any relationship between sleep, anxiety and depression. I distributed 3 scales measuring sleep, anxiety and...

    Started by Rysa‎, 05-13-2016 12:40 PM
    • Replies: 1
    • Views: 226
    05-14-2016, 03:30 PM Go to last post
  49. Ancova help please

    Hey guys i have a few questions below that I need help with. Anyone please. I can't wrap my head around it even after all the reading. QUESTION 1...

    Started by mistfolk‎, 05-14-2016 11:01 AM
    • Replies: 0
    • Views: 200
    05-14-2016, 11:01 AM Go to last post
  50. How to perform ANOVA with two groups

    Dear Stats Gurus, I hope you can help me with my problem. I'm about to develop an old empirical work of mine, but I don't quite know how. In...

    Started by blaness‎, 05-08-2016 04:06 PM
    • Replies: 4
    • Views: 272
    05-13-2016, 04:12 AM Go to last post
  51. Outliers, winorising and t-test

    I have two group of 25 and 27 people. I want to compare them on a sex activity score that vary from 0 to 9. My distribution is algedly normal,...

    Started by lexas‎, 05-12-2016 09:22 PM
    outliers, spps
    • Replies: 1
    • Views: 161
    05-13-2016, 02:29 AM Go to last post
  52. Need help with the correct analysis

    HI I can't wrap my head around what type of Anova i need to use for my data and if my way of thinking is correct. Been to long since i've used...

    Started by Bobson‎, 05-12-2016 05:14 PM
    • Replies: 0
    • Views: 134
    05-12-2016, 05:14 PM Go to last post
  53. Help with clarification of design and statistical procedure of study

    Hello forum, I'm desperately looking for some input and help concerning a study for my doctoral project. I will outline the basic setting and my...

    Started by Helpstats‎, 05-12-2016 10:41 AM
    • Replies: 1
    • Views: 156
    05-12-2016, 03:13 PM Go to last post
  54. Help with mixed model analysis


    Started by Chia‎, 05-12-2016 02:47 PM
    experience sampling, mixed between anova, mixed model, multilevel modeling
    • Replies: 0
    • Views: 136
    05-12-2016, 02:47 PM Go to last post
  55. Lightbulb Which statistical analysis to run?

    Hi All, I'm currently working on my psychology project however, struggling with the results section; I'm not quite sure which analysis to run. ...

    Started by hazedem‎, 05-09-2016 10:30 AM
    psychology, statistical analysis
    • Replies: 4
    • Views: 303
    05-10-2016, 05:43 AM Go to last post
  56. Talking Proper analysis for group differences in proportion scores

    Hello all, I am running analyses looking at group differences in the proportion of time kids were distressed in a task. I have a task that has...

    Started by bonnieerin‎, 05-07-2016 03:15 PM
    group differences, kruskal wallis, non normal distribution, proportion test, proportions
    • Replies: 0
    • Views: 229
    05-07-2016, 03:15 PM Go to last post
  57. statisical help

    A clinical psychologist is studying the efficacy of a new drug medication for depression. The study includes a placebo group (no medication) versus a...

    Started by don09‎, 05-06-2016 04:35 PM
    • Replies: 1
    • Views: 320
    05-07-2016, 06:06 AM Go to last post
  58. Narcissism in organizations

    For my thesis I have to describe (not execute) a research plan. 374 Employees of a certain company need to fill in a survey, which consist of two...

    Started by milano‎, 05-04-2016 06:43 PM
    • Replies: 0
    • Views: 218
    05-04-2016, 06:43 PM Go to last post
  59. Using repeated measures change/trend as a predictor variable

    I have repeated measures of happiness for a sample of participants, and a single measure of satisfaction for each of the participants. I want to...

    Started by replica‎, 05-04-2016 08:20 AM
    change-scores, regression-coefficients, repeated-measures, trend
    • Replies: 0
    • Views: 97
    05-04-2016, 08:20 AM Go to last post
  60. Pearson's Partial Correlation - Transforming one non-normally distributed variable

    Hi all, I would be really grateful if someone could advise me on an issue I am having. I am carrying out research looking at the relationship...

    Started by DeirdreTwomey‎, 05-02-2016 10:00 AM
    log10, normality issue, normality transformations
    • Replies: 1
    • Views: 568
    05-02-2016, 11:10 AM Go to last post

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