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# Forum: Psychology Statistics

Psychological statistics, quantitative psychology. Statistics in social sciences. Experimental design, data analysis.

Please provide us with some basic information before we can give useful advice: 1. purpose of the study / research question / hypotheses, if...

• Replies: 0
• Views: 24,367
11-10-2005, 12:21 AM
1. ### urgent spss anova help!!!!

I have to enter data into spss that is already given to me the study description is bellow. i would like to know three things; 1 is this a one-way...

• Replies: 3
• Views: 52
Today, 11:26 AM
2. ### What analysis do I run?

Hi All, I am conducting a study within the ASD population that is looking at IQ, executive function and adaptive skills for which of them I am...

• Replies: 10
• Views: 300
Yesterday, 08:46 AM
3. ### Test Your Quantitatie Research Design Knowledge

CAN SOMEONE PLEASE HELP WITH THE FOLLOWING QUESTIONS??? Karsh (1983) designed an experiment on the relationship between early handling and...

• Replies: 2
• Views: 122
04-21-2017, 08:38 AM
4. ### 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...

• Replies: 0
• Views: 91
04-19-2017, 09:56 AM
5. ### Testing between scores of three groups

17 teachers answered a survey of 27 questions for three Groups of students (below average, average, above average) The answers to the questions are...

• Replies: 6
• Views: 208
04-19-2017, 04:29 AM
6. ### 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...

• Replies: 0
• Views: 98
04-17-2017, 11:00 AM
7. ### Descriptive Statistics and Regression Help

Hi all, I need help writing some results for my report. I am very rusty with statistics as I've taken a long break from it all :( safe to say I...

• Replies: 0
• Views: 146
04-15-2017, 06:30 PM
8. ### Correlation Analysis on Ordinal and Continuous Data (Spearman's?)

My study is looking at the effects of working memory training on smoking related behaviour. We basically trained half participants with a dual n back...

• Replies: 0
• Views: 121
04-14-2017, 08:16 AM
9. ### ANOVA What ANOVA should I use?

I'm writing a research proposal and I'm not sure what statitical analysis I should use. I was thinking about using ANOVA, but I don't know what ANOVA...

• Replies: 7
• Views: 219
04-13-2017, 08:36 PM
10. ### I don't know what statistical analysis to use

Hello, I'm writing a research proposal for my psy 400 class and I'm not sure what statistical analysis to use for my expected results. The purpose of...

• Replies: 0
• Views: 56
04-13-2017, 04:13 PM
11. ### warning: "covariance matrix of latent variables is not positive definite"

Hi all, I ran a 5 factor CFA model, and I got a warning saying that the covariance matrix of my latent variables is not positive definite. I...

• Replies: 2
• Views: 137
04-13-2017, 03:12 PM
12. ### Metaanalysis Tanner-stages Probit/Logit/...

Hello, I am running a metaanalysis about the ages of girls and boys in the Tanner-stages of puberty (https://en.wikipedia.org/wiki/Tanner_scale)....

• Replies: 0
• Views: 113
04-13-2017, 01:41 PM
13. ### Finding an overall level of Motivation (from a motivational questionnaire)

Hi, i was hoping i could get some help concerning the statistics of factors in a Motivational Questionnaire. Long story short, in the company i...

• Replies: 0
• Views: 76
04-13-2017, 10:01 AM
14. ### Tests for B mediating or moderating A->C, w/ path analysis?

I'm hoping to use path analysis to learn more about the relationship between three individual difference variables. I'm new to Mplus and to path...

• Replies: 0
• Views: 59
04-12-2017, 09:58 PM
15. ### Multiple IVs and DVs- which test should be used?

Hey guys! I've been provided with a data set and asked to do two analyses based on the following study aims: 1. Look at associations between the...

• Replies: 1
• Views: 145
04-12-2017, 08:25 AM
16. ### Determining sample size from confidence interval and significance level

Hi everyone, I am studying a university level stats course at the moment and I have been given some excerises to take home that I am struggling...

• Replies: 1
• Views: 220
04-09-2017, 04:31 PM
17. ### Determining If Difference Score Was Obtained By Chance

For example lets say a counselor has been using a depression test on clients at the start of treatment and again 6 months later. When the counselor...

• Replies: 2
• Views: 207
04-07-2017, 08:36 PM
18. ### Manova?

Hi, I am doing data analisis for my research and I kinda got stuck with it, I have seached alot and I am getting inconsistent informations if it...

• Replies: 0
• Views: 59
04-06-2017, 08:44 AM
19. ### SEM Mediation using bootstrapping approach

Hi, I am performing mediation analysis using structural equation modelling (I'm using the lavaan package in 'R'). I am using the bootstrapping...

• Replies: 4
• Views: 305
04-05-2017, 08:53 AM
20. ### Family Relationship version of Factor analysis for Japanese Groups

I am trying to create a scale to measure "comportment" (bodily manners, gyougi) among Japanese and I am doing an exploratory factor analysis...

• Replies: 0
• Views: 195
04-03-2017, 11:58 PM
21. ### Lack of homogeneity of Variance in two-way ANOVA

Hi, I am currently analyzing my data in SPSS. Since I am testing the effect of two independent variables on a dependent one, I was planning on...

• Replies: 4
• Views: 391
04-02-2017, 12:03 AM
22. ### Signal detection theory - d' and C - unexpected results

Hi I've conducted a 2-alternative forced-choice experiment whereby participants were shown images, and then in the test phase had to choose which...

• Replies: 1
• Views: 204
04-01-2017, 11:34 PM
23. ### Correction for attenuation: WAIS-IV and test X

Hi, I have been asked to do a correction for attenuation of the context between a specific test (Lets call it test X) and a specific part-test of...

• Replies: 7
• Views: 334
03-30-2017, 03:08 PM
24. ### Interpreting my data (bias?)

Hello everyone! I had participants learn items from a list and afterwards do a recognition test on them. (EXPERIMENTAL GROUP) the same...

• Replies: 0
• Views: 395
03-24-2017, 11:47 AM
25. ### Correct way of reporting Chi square with IV 4 levels results

Sorry, if the question is silly. Cannot find anywhere what will be a correct way of reporting Chi Square results for the case when IV has 4 levels (4...

• Replies: 4
• Views: 405
03-23-2017, 10:02 PM
26. ### Signal Detection Theory - Calculating d'

Hi there. I'm currently doing the analysis for my undergraduate study, and I'm wondering if someone could help me with Signal Detection Theory,...

• Replies: 3
• Views: 362
03-23-2017, 12:43 PM
27. ### Need help in Polynomial Regression : constant value and control variables

Solved. Please remove thank you : )

• Replies: 0
• Views: 204
03-22-2017, 11:50 PM
28. ### Which post-hoc test for a One way repeated measures ANOVA

Can I use a Tukey test to test all pairwise comparisons for a repeated measures design? :) THANKS

• Replies: 3
• Views: 317
03-22-2017, 10:45 PM
29. ### How to organize Multilevel Model in R

Hello, I am currently running an experiment where we measure escape latency and seeing if the presence of a drug has an effect on this. Each rat...

• Replies: 0
• Views: 200
03-22-2017, 10:40 PM
30. ### Two-way MANOVA

Hi, how do I fully follow up this MANOVA, please??? 2 IVs: Exposure Therapy (2 levels: control, or virtual reality) and Medication (2 levels:...

• Replies: 0
• Views: 159
03-22-2017, 04:02 PM
31. ### Which ANOVA to use

I have 20 subjects who are all presented with 12 pictures. These 12 pictures are split into 4 categories: Big Inanimate, Big Animate, Small...

• Replies: 2
• Views: 243
03-22-2017, 06:04 AM
32. ### Help finding a term used in validity - psychometric testing

A colleague has asked me for help with the name of a recognised situation whereby truncated information (e.g. a short questionnaire) is used to...

• Replies: 10
• Views: 577
03-22-2017, 04:22 AM
33. ### Likert scale data -can I use paired t-test? What about normality testing?

Hey all! I have read many contradicting manuals and advice, so I decided to ask the best experts –you guys :) I have data from 40 subjects. I...

• Replies: 6
• Views: 548
03-19-2017, 05:19 PM
34. ### Interaction follow-ups

Hi! I have ran a 2x2x2 ANOVA (B-W-W). There was no 3-way interaction, but there was a 2-way interaction for my 2 within-subjects factors. I'm a...

• Replies: 0
• Views: 232
03-19-2017, 09:47 AM
35. ### MANCOVA MANOVA_assumptions_ heterogeneity of regression slopes

Hallo there :wave:, I am examining the difference in illness models (by asking several questions: DV) for refugees and non-refugees (IV) (both n=...

• Replies: 0
• Views: 181
K_T
03-17-2017, 01:25 PM
36. ### MANCOVA MANOVA_assumptions_ heterogeneity of regression slopes

Hallo there :wave:, I am examining the difference in illness models (by asking several Likert scale type questions: DV) for refugees (n=100) and...

• Replies: 0
• Views: 116
K_T
03-17-2017, 12:11 PM
37. ### What are the limitations to feeling thermometers?

Hi there, I received the following comment from a reviewer and am a bit stuck on how I should answer: The comment is referring to our use...

• Replies: 2
• Views: 278
03-16-2017, 03:52 PM
38. ### Does it make sense to conduct a Hierarchical Principal Compomnent Analysis (PCA)?

So I have twelve variables that theoretically belong to the same dimension and I want do reduce them to one single item. A hierarchical factor...

• Replies: 1
• Views: 410
03-13-2017, 08:56 AM
39. ### Which test to use?

I have to analyze a within-subject experiment with a continuous dependent variable and a categorical dependent variable (brain stimulation: Anode,...

• Replies: 1
• Views: 286
03-13-2017, 08:53 AM
40. ### Assumptions of Bonferroni correction

Hi everyone, I recently learned that the Bonferroni correction assumes that all of the hypothesis tests we're conducting on the same data are...

• Replies: 3
• Views: 417
03-13-2017, 08:52 AM
41. ### how to calculate ICC for sample of 10 with two assessor

i have two assessors rating on picture cue . SME rateds each stories respective to picture in TAT like test with rating on likert 5 point scale from...

• Replies: 1
• Views: 297
03-13-2017, 08:49 AM
42. ### How should I analyse this data?

Hello! I've been banging my head against the wall trying to work out the best way of looking at this data. I think I'm missing something simple,...

• Replies: 6
• Views: 686
03-07-2017, 05:37 AM

Hello all, Someone please help. I'm conducting a study on how group gender ratios influences stereotype threat within career choices and level of...

• Replies: 11
• Views: 575
03-06-2017, 12:40 PM
44. ### Quick Cronbach's Alpha Question

Hi all, This may seem like a silly question, but I was wondering if I should remove outliers prior to running reliability analysis or run the...

• Replies: 14
• Views: 998
03-03-2017, 02:16 AM
45. ### pre post design - analysis help

Hi everyone, I'm analyzing some data for a research project and need some help selecting the appropriate test that will answer my questions of...

• Replies: 0
• Views: 360
03-02-2017, 09:33 PM

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...

• Replies: 0
• Views: 492
02-27-2017, 08:30 PM
47. ### Which test to run?

I have been getting conflicting results from a few people on what test to use, so please let me know what you think. The design: We have 3...

• Replies: 26
• Views: 1,510
02-25-2017, 04:40 PM
48. ### Test for assessing if gender, organisation, management level and age have an impact

Hi, I am looking to carry out a multiple regression analysis to assess the factors that predict participant's post-training scores on the...

• Replies: 10
• Views: 701
02-23-2017, 11:29 PM
49. ### reversed, inverted items... MANOVA

Do I necessarily need to recode my inverted (negatively worded) items before running a MANOVA? I am running the MANOVA on all items of a...

• Replies: 0
• Views: 377
02-23-2017, 07:30 AM
50. ### mixing within trial, and between trial effects?

Hi I'm hoping someone can suggest to this stats dunce an elegant way to analyse the following data. We make a recording from a neuron and apply a...

• Replies: 0
• Views: 351
02-22-2017, 12:52 PM

two players number of games attended per player. t(66)= -3.09, p < .05 d = .35 What does this mean?

• Replies: 2
• Views: 524
02-16-2017, 08:56 AM
52. ### How to conduct a mixed-model analysis in SPSS?

Hi! I am trying to conduct the following analysis on human subjects data using SPSS. It is my understanding that it requires mixed modeling, and I...

• Replies: 1
• Views: 560
02-14-2017, 01:26 PM
53. ### Inter rater agreement - Mezzich's Kappa

Dear all, I want to assess the quality of the categorization handbook and the accordance between multiple raters who have categorized articles...

• Replies: 0
• Views: 504
02-09-2017, 09:27 AM
54. ### general correlation question

hello! if variable A is correlated to var B (.37) and var B is correlated to var C (.32), can we infer the correlation between var A and var C?...

• Replies: 7
• Views: 689
02-07-2017, 11:28 PM

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