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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: 31,424
11-10-2005, 12:21 AM
1. ### What analysis for two independent groups with one additional dependent group?

Hi all We had people record responses while assigned to 2 different conditions (A and B). We then divided the responses from participants in B...

• Replies: 8
• Views: 1,943
03-26-2015, 06:24 AM
2. ### No interaction but significant planned comparisons - how to interpret?

Hi, I'm reading an article in which the authors describe how they weren't able to find an interaction between A and B, but that in planned...

• Replies: 3
• Views: 1,375
03-25-2015, 01:26 PM
3. ### Non-parametric three-way ANOVA?

Hi everyone, I and some of my classmates need to include a data analysis strategy in a research proposal assignment and could really use some help...

• Replies: 3
• Views: 3,440
03-24-2015, 03:48 AM
4. ### How to examine relationship between independent, dependent and explanatory variables?

Hello, I am doing a study looking at the effects of positive thinking (PT) and exercise on depression. I'll be measuring at LEAST 2 outcomes. So...

• Replies: 4
• Views: 1,753
03-22-2015, 07:35 PM
5. ### Boston Naming Test

Dear Friends, I am trying to define the differences of two means in Boston Naming Test (BNT). I want to conduct a multipl regression with...

• Replies: 0
• Views: 2,179
03-22-2015, 03:47 AM
6. ### Need help: reg EQS and Goodness of Fit tests

Hi! Hope you guys could help me out here... I'm doing a path analysis on EQS, and the goodness of fit test results i got are the ff - i'm not sure if...

• Replies: 7
• Views: 1,779
03-17-2015, 12:39 PM
7. ### Comparing two groups in the Theory of Planned Behavior

Greetings all: I am trying to determine the best method to compare two groups (gender in this case) means/factor loadings on the Theory of Planned...

• Replies: 1
• Views: 3,145
03-16-2015, 07:48 PM
8. ### Which test to use? Correlation or Regression

Hi, I need some help with choosing the statistical analysis. Details of my study. all participants will complete surveys measuring self...

• Replies: 5
• Views: 1,022
03-16-2015, 08:13 AM
9. ### Appropriate Statistical Test?

Hi everyone, I have a question regarding the appropriate statistical test to use for a particular experiment. This is a 2x2 within-subject...

• Replies: 0
• Views: 1,332
03-12-2015, 02:15 AM
10. ### How to do Mediation across pre-post timepoints?

Hi all, I am looking into analyzing potential mediation and not sure how to approach it with two timepoints. For some context, participants are...

• Replies: 1
• Views: 2,017
03-11-2015, 07:17 AM
11. ### Analysis for a repeated measures design with covariate that varies over conditions?

Hi all, I'm trying to find the correct analysis that will allow me to carry out the equivalent of a repeated measures MANCOVA with a covariate...

• Replies: 3
• Views: 1,451
03-10-2015, 04:03 PM
12. ### Likert scale analysis: Help!

Hi, I'm new here. I'm at my final bachelor year and in order to graduate, I need to write a thesis. The subject of my thesis regards the...

• Replies: 3
• Views: 1,702
03-06-2015, 03:10 PM
13. ### A Priori Power and Sensibility analysis

Hi everyone, I'm new around here, so i don't know if this thread belong to this board, but if it doesn't just let me know. Here is the thing....

• Replies: 0
• Views: 1,302
03-02-2015, 01:47 PM
14. ### Mediation in SPSS

Hi all, I need some help with the research that I'm curretly doing. I would like to analyse the mediation effect in this case: 1. SES -...

• Replies: 1
• Views: 1,288
02-27-2015, 01:13 PM
15. ### Beta weights - HELP PLEASE

Are Beta weights the same as squared predictor-dependent variable correlation coefficients? Thanks! Ryan_Cohen

• Replies: 2
• Views: 1,380
02-25-2015, 06:48 PM
16. ### unipolar and bipolar scales

Can I correlate unipolar and bipolar scales without doing anything special? A unipolar scale runs from zero to some number, e.g., 0-50 (usually...

• Replies: 0
• Views: 1,870
02-24-2015, 03:27 AM
17. ### [help] Reporting Fisher r to z

How to report Fisher r to z in APA format? I used the online calculator to calculate the z.......but I am not sure how to report it in my paper.

• Replies: 0
• Views: 1,786
02-20-2015, 01:46 AM
18. ### Not Sure How to Start

I'm taking an online course, have read through the textbook, gone through the PowerPoint notes, tried looking this up elsewhere online, consulted...

• Replies: 2
• Views: 1,141
02-19-2015, 11:44 PM
19. ### pre- and post-test analysis: multiple comparison problem? can someone help me out?

Dear all, I am doing research about a cognitive training program. I am curious to know how to analyse if the difference between the pre and the...

• Replies: 0
• Views: 884
02-16-2015, 08:32 AM
20. ### goal: why cumulative % exceeds 1 when I do principal axis factoring in STATA

Hi, I surfed the net only to find reasons why it could exceed 1 if I use ipf or pf rotation for exploratory factory analysis. How about principal...

• Replies: 0
• Views: 1,272
02-15-2015, 08:57 AM
21. ### Need help with an assignment for stats class: reading Two Factor ANOVA tables

Hello, first I suck at statistics and have fallen behind a bit in my class and have a lot of very obvious questions to ask. This is probably one of...

• Replies: 2
• Views: 1,298
02-14-2015, 05:38 PM
22. ### Need help selecting the appropriate test!

Hello all, I'm trying to determine if gender has an influence in 1. Qualifying for a competition (3 finalists) and 2. winning a competition (New...

• Replies: 0
• Views: 958
02-13-2015, 11:35 AM
23. ### comparing means of aggregate data

Dear community, We recently administered a test with 30 multiple choice questions to a sample of freshmen at our college. I also received the...

• Replies: 0
• Views: 1,202
02-13-2015, 10:25 AM
24. ### Experimental design question

I am struggling with the complexity of my experimental design... I apologize in advance for any incorrect terminology or grammar. I know that I...

• Replies: 7
• Views: 2,057
02-12-2015, 03:08 PM
25. ### Grouped continuous variables in descriptives

Hi, I am conducting a study in which I have measured stress (lowest score 1, highest 5 - Likert) and several other variables such as age,...

• Replies: 3
• Views: 1,582
02-12-2015, 12:02 PM
26. ### choose a test for 4 independent variables research

Hi, I conducdt a small research with 4 categorial independents variables and 1 ratio sependent variable. i intrested to find out about each...

• Replies: 8
• Views: 1,912
02-10-2015, 01:47 PM
27. ### analysing cognitive rehabilitation and controlling for spontaneous recovery(SEM)

Dear all, When trying to figure out the proportion of explained variance of a cognitive rehabilitation program for stroke patients, you have to...

• Replies: 0
• Views: 802
02-10-2015, 04:46 AM
28. ### [R - "interval range"] - how to analyse a self-applied range?

I am conducting a experiment in the form of a survey where I test the effect of three different framings on the same subject (data collecting has not...

• Replies: 0
• Views: 818
02-09-2015, 06:20 PM
29. ### Violation of Homogeneity of Variance

I'm using SPSS to test whether my two groups (HCs and Offspring) have a difference in the number of errors comitted on a psych measure. Total sample...

• Replies: 7
• Views: 2,021
02-09-2015, 06:00 PM
30. ### How to test my hypothesis?

TLDR: I have acquired data via questionnaire, want to test hypothesis as in picture below. What to do? Dear all, I am studying psychology in...

• Replies: 5
• Views: 2,167
02-06-2015, 09:59 AM
31. ### A psy student in desperate need of help.

Hey guys, lovely to know there's a forum that does SPSS. I have a task in Inferential Statistics that consists of 5 questions. I got two covered, but...

• Replies: 3
• Views: 1,678
02-05-2015, 02:19 PM
32. ### What test?

Hello, I have 46 participants coming on three different days. They will be doing 3 tasks with three treatment/stimulation conditions. 1st...

• Replies: 0
• Views: 1,218
02-05-2015, 10:51 AM
33. ### Psychology Research Data Analysis Help

Just a little background on my data: I have been thinking about names and how I cannot imagine anyone I know to have a different name. Their name...

• Replies: 2
• Views: 1,469
02-04-2015, 06:37 PM
34. ### Sociology - A Mapping of Cultural Practices

Hi, For my thesis I study the french cultural social network SensCritique.com allowing people to rate and review different kind of cultural...

• Replies: 2
• Views: 1,650
02-04-2015, 04:00 AM
35. ### 3 ways to decompose the strength of prediction in linear regression.

I am wondering how to explain the three ways that the strength of prediction in linear regression can be decomposed. I need to explain using words...

• Replies: 5
• Views: 3,077
02-03-2015, 01:13 AM
36. ### An unusual case

Having some trouble figuring out the appropriate test for my data. The problem is structured as follows. For each of my subjects I have: 1) a...

• Replies: 0
• Views: 920
02-02-2015, 10:50 PM

Hello, I'm trying to answer the following using SPSS: is there a difference in Offspring Children and Healthy Controls on the number of errors...

• Replies: 1
• Views: 1,037
02-02-2015, 03:43 AM
38. ### need some help for finding the right method :)

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• Replies: 0
• Views: 1,288
02-01-2015, 09:36 PM
39. ### Design to use?

If I want to test music use for social reasons against music use for personal reasons and scores on an emotional wellbeing questionnaire, would this...

• Replies: 2
• Views: 1,615
01-29-2015, 06:40 PM
40. ### Using a dependent t-test with z-scores

Hi, I'm trying to run a dependent t-test to check if the manipulation of the independent variable in an experiment worked. The independent...

• Replies: 2
• Views: 1,255
01-27-2015, 05:23 AM
41. ### Change within groups and differences between groups

Hi All, I have a question that perhaps is basic for most of you. I am hoping I can rely on your expertise to answer this question. I am trying...

• Replies: 1
• Views: 1,092
01-24-2015, 11:34 PM
42. ### Complex study data analysis

Good afternoon, I have a long-running experiment on music and emotion for my Ph.D. research. Big picture—there have been nine total ‘versions’...

• Replies: 2
• Views: 1,787
01-24-2015, 11:12 AM
43. ### Weaknesses in the assumptions misuses of HLM/multilevel modeling

Hopefully the title says it. What do people see as potential/perceived weaknesses in the assumptions and/or misuses of HLM/multilevel modeling?

• Replies: 4
• Views: 2,425
01-19-2015, 02:59 PM
44. ### MANCOVA w/ continuous IV?

For my thesis, I originally proposed to do a MANCOVA with various continuous covariates, four continuous DVs, and two categorical IVs, one of which I...

• Replies: 1
• Views: 1,374
01-19-2015, 03:29 AM
45. ### Age as covariate removes interaction with group

Hello, I'm new here. Thanks for reading. I'm running a between subjects repeated measures anova in spss. I have one factor (with two levels;...

• Replies: 0
• Views: 2,625
01-12-2015, 08:03 AM
46. ### bonferroni corrected p-values pairwise comparisons SPSS

Dear, I am using Linear Mixed Modeling in SPSS. I have a significant interaction between two variables: correctness (2 levels: correct vs error)...

• Replies: 1
• Views: 3,215
01-07-2015, 09:25 AM
47. ### latent class analysis

Hi all: I'm interested in using a set of 6 binary indicators to do a latent class analysis and I'm wondering if my strategy can be improved. We...

• Replies: 2
• Views: 1,475
01-04-2015, 12:27 AM
48. ### need help for chose statistic methods

hello every body. Im doing a research to comparing to type of exercise in body composition. per exercise protocol has 4 steps testing (pre-test,...

• Replies: 0
• Views: 1,240
12-29-2014, 10:47 AM
49. ### Need to use Bonferroni?

Hi there, I am unsure whether I need to use a Bonferroni correction... I have conducted 20 paired t-tests to analyse change in scores from...

• Replies: 5
• Views: 2,188
12-23-2014, 11:00 AM
50. ### How to do stratified randomised allocation.

Hello, Can anyone clearly explain some good, proper methods to do stratified randomised allocation? I have looked in my stats/research books...

• Replies: 5
• Views: 2,161
12-18-2014, 04:12 PM
51. ### Which method is best for synthesising effectiveness data of interventions?

Hello everyone, I was wondering if someone might be able to point me in the right direction... I want to combine the findings of several...

• Replies: 0
• Views: 1,207
12-13-2014, 04:59 PM
52. ### One-way ANOVA - which is best effect size stats to report for unequal size samples?

I am finding quite contradictory information on line as to which best statistics to use for effect size for one-way ANOVA when the size of the groups...

• Replies: 0
• Views: 1,227
12-12-2014, 09:30 PM
53. ### Needed effect size of a treatment from variation of base stimuli?

Hello, from a previous experiment I know the variance of ratings from subjects to a given stimulus in its original form. Now if I make an...

• Replies: 0
• Views: 1,173
12-11-2014, 05:12 AM
54. ### small SD

Hi, for my stats course, we are using a programme my tutor made himself and we found that having a small SD compared to large doesn't actually affect...

• Replies: 2
• Views: 1,669
12-08-2014, 02:44 PM
55. ### correlation/regression with data that's non-normally distributed, collinear, missing

I have a dataset that's like this: dependent variable: standardized test score independent variables: weeks spent using study method A weeks...

• Replies: 0
• Views: 1,449
12-06-2014, 12:55 AM
56. ### how to determine qualitative dispersion over time with differing sample sizes

I've been working on a study with workers at a certain plant, to test their safety awareness. During a meeting, everyone is asked to select a card...

• Replies: 0
• Views: 1,145
12-03-2014, 12:20 PM
57. ### Single Subject Research Analyses

Hello, Thank you in advance for taking the time to read and consider this problem. I really appreciate it. I am doing some single subject...

• Replies: 2
• Views: 1,566
11-27-2014, 06:49 PM

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