1. 10-14-2010
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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: 22,707
11-09-2005, 11:21 PM
1. ### Correlation & Regression

I have used regression to explain a dependent variable with a number of independent variables. The finding is that the variables with highest beta’s...

• Replies: 5
• Views: 927
12-07-2016, 02:53 AM
2. ### Nonparametric equivalent to a factorial ANOVA?

Hi, Does anyone know of a nonparametric equivalent to a factorial ANOVA? I can't run a parametric test because I have violations of normality of...

• Replies: 12
• Views: 1,437
12-07-2016, 02:38 AM
3. ### Hypothesis Testing and Pearson's Homework Help PLS

I have 2 questions I need help with: 1.You own the company that makes the cheap store brand wine for Walmart (Chateau Trailerparc). You think most...

• Replies: 0
• Views: 608
12-04-2016, 01:42 PM
4. ### Outliers in categorical data?

Hello! I am working on a pre-analysis plan and have to specify what I am going to do with outliers. I have two categorical variables (5 levels and...

• Replies: 2
• Views: 565
12-02-2016, 05:41 PM
5. ### How to include hanging control in ANOVA analysis on SPSS

Hi all, I'm hoping to get some advice on how to run ANOVAs in SPSS for a design that includes a hanging control group. I'm interested in how...

• Replies: 2
• Views: 1,405
11-30-2016, 09:53 AM
6. ### 2x2x3 Anova, what will it tell me?

Hi - I would like to compare the means of a DV (emotional intelligence) between three different variables, those being; 1) Gender (are the...

• Replies: 2
• Views: 634
11-29-2016, 01:58 PM
7. ### Which analysis to choose? Urgent

Hi, any help is greatly appreciated. I have data from the same children at ages 4, 7 and 11 for a variable (self-regulation) created from a...

• Replies: 5
• Views: 763
11-27-2016, 08:44 PM
8. ### effect size calculations for longitudinal mixed effects models

I have been working with a financial database and recently got comments from a reviewer on my manuscript. The comments stemmed from how I calculated...

• Replies: 0
• Views: 636
11-25-2016, 12:07 PM
9. ### How to analyze repeated measures game data with changing difficulty levels?

Participants: 19 children participated in the study. Children were grouped in groups G1 (N=8) and group G2 (N=11) based on their behaviors. A...

• Replies: 2
• Views: 669
11-23-2016, 09:33 PM
10. ### Repeated measures when pre/post group is not independent or dependent

Hello, I am running a pre-post study using several different instruments (e.g. 1-5 Likert scale instruments which produce a final score). It is...

• Replies: 2
• Views: 645
11-23-2016, 07:48 AM
11. ### Limits for missing values in the multiple imputation method

I have an understanding question and I need help. I have a record with many missing values. I now wanted to use the multipile Imputation method to...

• Replies: 6
• Views: 869
11-19-2016, 06:22 AM
12. ### IV = 2 levels, DV = rank list from 1-8. Not sure how to explore variability between

Greetings, I’m new to this forum and excited about enhancing my stats skills. I’m interested in exploring if there is a difference between two...

• Replies: 0
• Views: 643
11-14-2016, 08:38 PM
13. ### Number of responses above a threshold after considering survey error

I am interested in how many people in my survey of people earn between \$50,000 and \$54,999. I construct a paper survey which asks for income in...

• Replies: 3
• Views: 639
11-11-2016, 07:47 AM
14. ### Repeated Measures with 2 categorical variables and one continuous variable

Hello TalkStats members, Ok I have searched the web and this site and I feel like I am still lost on my problem. I have six items where...

• Replies: 0
• Views: 665
tqh
11-07-2016, 03:28 PM
15. ### Can someone show me a 2x3 design, with AB interaction & main effect of A and B?

Can someone show me a 2(A)x3(B) design, with AB interaction & main effect of A and B? In terms of a graph and an explanation of the graph ? My...

• Replies: 2
• Views: 818
11-06-2016, 02:13 AM
16. ### Factor analysis

Dear all, I have a question concerning a factor analysis run in Stata (principal factor, no rotation), based on 12 variables - my experience with...

• Replies: 0
• Views: 678
dnh
11-01-2016, 06:10 AM
17. ### Repeated ANOVA using comparable starting values?

Hello, I have a weird problem that I've never encountered before. I'm hoping someone else might provide their insight. I am conducted a study...

• Replies: 1
• Views: 747
10-27-2016, 02:48 AM
18. ### Need help: Running a One-way FIXED effects Between Subject, ANOVA in SPSS.

I am having to run a One-way FIXED effects Between Subject, ANOVA in SPSS, and I am STUCK! :( Anyone care to help? I will explain the best I can...

• Replies: 1
• Views: 685
10-26-2016, 06:55 AM
19. ### Composite reliability vs Cronbach's alpha

Hello Wondering if someone could clarify I'm developing a new measure with 10 constructs. Each construct has between 4 - 6 items. I've...

• Replies: 21
• Views: 22,626
10-24-2016, 04:47 PM
20. ### Structural Equiation Modeling - Likert variable and fit indices

Hello everybody! Thank you in advance for reading, and for trying to help! To put it briefly.. I am working with Structural Equiation Modeling...

• Replies: 1
• Views: 600
10-24-2016, 02:07 PM
21. ### HELP with data collection methods and data analysis in quantitative research

I am doing a research proposal on the effect of a drug on haemorrhage growth in traumatic brain injury. what level of data measurement will i use to...

• Replies: 1
• Views: 630
10-22-2016, 12:49 AM
22. ### Quick one please: Difference between 1-way and 2-way ANOVA - Example provided

Hello, I apologize in advance if this is too simple for these forums, but I am just wanted to be very sure. Example: A study that looks at 2...

• Replies: 7
• Views: 856
10-21-2016, 07:06 AM
23. ### Understanding correlations in order to test speed-accuracy trade-off in experiments

I understand that in experiments where the measures of interest are speed (reaction time) and accuracy, for an effect to be valid one needs to make...

• Replies: 3
• Views: 747
10-20-2016, 05:15 PM
24. ### Regression for multiple scores obtained from multiple subjects

Hello, I have preference ratings (1-to-7 scale) for k=80 stimuli, obtained from N=30 subjects. I would like to do a multiple regression for these...

• Replies: 0
• Views: 637
10-19-2016, 07:08 PM
25. ### Can someone give example of, 2-way randomized fixed factor Anova (between subjects)

Hi all, can someone give a link, or even a description of a two-way randomized fixed factor design, in which all factors (2) are between subject...

• Replies: 0
• Views: 453
10-19-2016, 01:27 PM
26. ### ANOVA on simple proportional accuracy scores versus on d prime indexes

To answer this, you would need to know what d prime is. Here is a link: http://www-psych.stanford.edu/~lera/psych115s/notes/signal/ The method I...

• Replies: 0
• Views: 531
10-18-2016, 05:02 PM

Hi all I am working on a project looking at ADHD in a large sample of adolescents. I am looking to investigate whether there are any differences...

• Replies: 2
• Views: 673
10-17-2016, 11:38 AM
28. ### Within Subjects Repeated Measures - Overall correlation across subjects

I’ll just start by giving a brief description of my study. It’s a memory study in which participants study an object and a cue stimulus together for...

• Replies: 4
• Views: 6,005
10-14-2016, 05:54 AM
29. ### Physiological statistics

Hello, I am planning my study, and cannot find the answers in a textbook, please could I have some advice? I am looking at variations in muscle...

• Replies: 0
• Views: 549
10-13-2016, 10:16 AM
30. ### Incredibility Index

Any anyone worked with the incredibility index before (Schimmack, 2012)? I've been trying to figure out exactly how it is calculated. Unfortunately,...

• Replies: 9
• Views: 1,004
10-12-2016, 10:37 AM
31. ### Between and within group differences

I am doing a research project on antisocial youth behavior and SES inequality. I am supposed to run two level logistic regression in STATA. There is...

• Replies: 2
• Views: 705
10-05-2016, 03:55 PM
32. ### Creating a summative scale for items with different number of response categories?

Dear TalkStats users, Let me first give you my main goal: I would like to create a summative scale that I could compare with other scales (each of...

• Replies: 0
• Views: 498
10-03-2016, 09:31 AM
33. ### What does only one significant standardised residual mean in 2x3 Chi Squared tables?

Hi everyone. I'm writing up a report for my advisor, which compares count data for three conditions, across two different groups. I therefore have a...

• Replies: 2
• Views: 616
09-29-2016, 03:12 PM
34. ### What to do about higher drop out rates in one group compared to another group?

Hey all - Something I am noticing with my data (still collecting) is that drop out rates in Group 1 is much higher than in Group 2. What is the...

• Replies: 3
• Views: 586
09-27-2016, 08:54 PM
35. ### When to control for multiple comparisons?

I have a test that I have given people, and it is looking at two particular variables. Each variable has two item types. So either an item is, for...

• Replies: 10
• Views: 880
09-27-2016, 10:22 AM
36. ### PROCESS: dichotomous moderator

Hello, I'm testing my moderated mediation model. I have dichotomous predictor and modeator. PROCESS is telling me that: "When the moderator is...

• Replies: 1
• Views: 504
09-26-2016, 07:35 PM
37. ### Sample Size Requirements (Power of .80.....)

Hi everyone, first post here :) Hoping to get some help with finding appropriate sample size for a little study. Ill try to give all relevant...

• Replies: 4
• Views: 495
09-26-2016, 10:41 AM
38. ### How do I examine statistical differences between sensitivity and specificity values?

Hi again, I have created sensitivity and specificity values for 2 devices against a gold standard. I would like to see whether these 2 devices...

• Replies: 5
• Views: 579
09-25-2016, 01:16 AM
39. ### Combining measures into 1 variable

I have 2 variables, one that measures (just for an examples) state aggression, and 1 that measures trait aggression. The state measure was responded...

• Replies: 7
• Views: 901
09-21-2016, 06:08 PM
40. ### Different results between MANOVA and Regression (PROCESS - moderated Mediation)

I have to calculate a moderated mediation with 2 mediators and 2 dependent variables. My model: predictor (dichotomous) moderator...

• Replies: 1
• Views: 537
09-20-2016, 10:51 AM
41. ### Testing an exploratory factor analysis model?

Dear colleagues, Is an exploratory factor analysis (EFA) model testable? is it common to test an EFA model using fit indices? the plausibility of a...

• Replies: 1
• Views: 402
09-13-2016, 08:40 PM
42. ### Falsify Normality results

Is it possible to falsify normality results - in order to conduct parametric analysis of results? Or will someone be able to tell?

• Replies: 3
• Views: 567
09-13-2016, 02:17 AM
43. ### Power calculation

Conducted a preliminary study & want to determine if i need more participants. How do I do this using spss 30 n , 10 stimuli (2 subcategories, 5...

• Replies: 2
• Views: 456
09-09-2016, 10:36 AM
44. ### Assumption of Equal Sample Size for Publication Bias Analysis

I am trying to do a meta analysis across 30ish studies and I am reachign the point of working on the publication bias issue. Unfortunately, for...

• Replies: 0
• Views: 440
09-05-2016, 11:33 PM
45. ### DIF Analyses with Missing Data

Hi all, I'm currently analyzing items from a bank for K-12 education. I have a separate data set for each grade/subject combination (for example,...

• Replies: 1
• Views: 568
08-31-2016, 06:01 PM
46. ### Can we test when a correlation becomes significant?

Hi all, Apologies that this is going to be quite a basic question, I just can't seem to find an answer in books and google etc.. If say I have...

• Replies: 4
• Views: 852
08-31-2016, 04:13 PM
47. ### Compute reliability after modification my model in AMOS

Hello, I've modified my model in AMOS to get a better fit. I've transferred my new factors with regression imputation to SPSS. I like to...

• Replies: 0
• Views: 454
08-30-2016, 05:28 PM
48. ### comparing two sets of data

hi, i want to check whether the two samples can be drawn from the same distribution. can i do it with chi-square test? what are the assumptions i...

• Replies: 0
• Views: 511
08-21-2016, 07:41 AM
49. ### Interpreting negative correlations between factors?

Hello evetyone! I conducted factor analysis on a 30-item scale which is suppose to be measuring xenophobia. All the variables were previously...

• Replies: 1
• Views: 282
08-17-2016, 09:25 AM
50. ### What statistical method to use?

I am currently designing a study and have all of the data entered but am having trouble finding the statistical method that should be used. ...

• Replies: 1
• Views: 400
08-16-2016, 01:40 PM
51. ### Moderated Mediation Model using PROCESS

Hello, I am running a moderated mediation model using PROCESS macro in SPSS and a bit confused with the results. The interaction of IV and...

• Replies: 0
• Views: 301
08-16-2016, 10:20 AM

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