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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: 32,119
11-10-2005, 12:21 AM
1. ### which test is appropriate to find 'link'?

Hi I don't know how to solve an assignment. I have been staring at it for hours. Am not sure if I need to find correlation or if I should demonstrate...

• Replies: 14
• Views: 4,427
11-18-2013, 08:43 AM
2. ### appropriate statistical analysis with experience sampling design

In an experience sampling exploratory study we asked participants to report on a set of continuous variables (IVs= x1, x2, x3, x4, x5 , DV=y) 5...

• Replies: 0
• Views: 2,243
11-16-2013, 04:10 PM
3. ### Complex Randomisation in Clinical Trials

I am running a clinical trail. At the end I will have 45 people in a control group and 70 with T1 & T2 treatment data. I want to use a post hoc...

• Replies: 0
• Views: 1,190
11-15-2013, 08:08 AM
4. ### Lower Power

Why is designing a study with low power problematic? Please answer briefly.

• Replies: 3
• Views: 1,686
11-14-2013, 04:38 PM
5. ### simple effects analysis

Hello, My apologies if this topic should not be here. I have a within participant design with two variables: view and task. I obtain an interaction...

• Replies: 0
• Views: 1,125
11-13-2013, 11:09 AM
6. ### Which test is appropriate?

I'm trying to test whether time (IV1) has an effect on the relationship between a specific personality feature (IV2, quasi-continuous) and scores on...

• Replies: 0
• Views: 1,148
11-12-2013, 05:22 PM
7. ### Question about analyzing survey data for two populations

I am administering two surveys, one to faculty and one to students. The surveys are similar, but the items for the students ask about their actual...

• Replies: 2
• Views: 1,408
11-12-2013, 09:51 AM
8. ### Which test to use - help please!

Hi, could someone advise me on which test i should be using please? Im testing if staff training impacts on attitude to patients using a between...

• Replies: 4
• Views: 1,421
11-11-2013, 04:22 PM
9. ### Confusion: "effect size suggests experimentals did half a SD better than controls"

Hello, I am reading an article an I am having trouble understanding an aspect of effect size. The article...

• Replies: 3
• Views: 1,691
11-10-2013, 05:40 PM
10. ### Using factor analysis to avoid Bonferroni death?

Hi! I have a study with three dichotomous IVs and five DVs, which are brief, relatively reliable composite scales derived through factor analysis....

• Replies: 0
• Views: 1,265
11-10-2013, 04:10 PM
11. ### Repeated measures ANCOVA - assumptions & covariates?

Hi, So I am currently looking to carry out an ANCOVA, I have three treatment groups who each had carbon monoxide measure before and after treatment....

• Replies: 0
• Views: 1,697
11-09-2013, 06:09 AM
12. ### One IV (2levels) 4 DVS - What test to use?

Hi all, Asked a question on this forum previously and the response is far greater than any other forum around! I have been collecting pre and...

• Replies: 6
• Views: 5,987
11-08-2013, 09:51 PM
13. ### Multiple regression for survey study - question re analysis and required sample

Hi, The question I'm looking for help with is firstly to confirm with wiser people that the planned analysis is actually best suited to the data...

• Replies: 4
• Views: 2,721
11-08-2013, 09:29 PM
14. ### How to best analyze individual level predictor vs. organization level outcome data

I have inherited a dataset with two types of data from an employee opinion survey project spanning multiple organizations. We have responses by...

• Replies: 2
• Views: 2,103
11-08-2013, 09:11 PM
15. ### Meta Analysis - Correlation Coefficients with only M and SD

Hi Folks, I'm am currently assisting on a Meta-Analysis and we are currently faced with correlating variables without the raw scores. The question...

• Replies: 21
• Views: 4,351
11-08-2013, 10:37 AM
16. ### What type of test to use? (Averages of averages?)

Hello everybody, I'm trying to decide what would be the best test to use. I have a survey made up of 40 items. Each item was a word for a...

• Replies: 0
• Views: 1,079
11-08-2013, 09:56 AM
17. ### which test to use ?and how to report non-significant manova results?

Hi there, I have some questions about my data analyses and I hope you help me with that. In one of my hypotheses I am assuming that there will...

• Replies: 0
• Views: 3,147
11-06-2013, 02:50 PM
18. ### Friedman test significant but post-hoc tests not?

Hello, I am currently analysing some data based on scores from a mood scale of 8 participants before and after a move (there are three time points,...

• Replies: 10
• Views: 9,251
11-06-2013, 09:44 AM
19. ### Inter-Rating Reliability / Intra-Class Correlation in SPSS - Help Requested

Hi, To start with I have almost zero stats experience so please bear with me :) I have recently conducted a survey with 14 raters assessing the...

• Replies: 2
• Views: 3,488
11-04-2013, 06:36 AM
20. ### Between group test, 2 independent variables which test to go for?

Hi everyone, I am unsure of the statical test I need to run. The independent variable has two dimensions that should not interact with each...

• Replies: 2
• Views: 1,837
11-02-2013, 03:44 AM
21. ### Which test to use?

Right guys, I've been out of this for a while and I need some help deciding which test I should be using. I am trying to measure three things;...

• Replies: 2
• Views: 1,419
11-01-2013, 03:06 PM
22. ### What kind of ANOVA is this?

Ok...I know this may be a silly question but I am extremely bad at stats. I have an experiment with two IVs and a control group. ie. one group...

• Replies: 5
• Views: 1,973
11-01-2013, 12:28 PM
23. ### binomial logistic regression

Hi all, I would like to know the assumptions of binomial logistic regression in generalized linear model. I can't find a book talking about that...

• Replies: 7
• Views: 2,328
11-01-2013, 10:06 AM
24. ### Optimal data analysis

Hello Group and thank you for taking the time to read this.. My research is examining whether membership of one of two personality categories...

• Replies: 2
• Views: 2,377
10-31-2013, 08:24 PM
25. ### Mistake in design? No control group...!

Hi all, I am concerned that I have made an error in my design and need to present stats soon and fear looking like a fool :( Essentially what...

• Replies: 7
• Views: 1,680
10-31-2013, 03:20 PM
26. ### Question about what test to run when comparing groups.

I am doing a research study on the effects of study methods on exam performance. I have already administered a survey and collected data from...

• Replies: 3
• Views: 1,491
10-29-2013, 06:25 PM
27. ### Statistical analysis for single-case designs question

Hello, I'm attempting to conduct an analysis of single-subject data and am unclear on a particular step. I have collected repeated measures of a...

• Replies: 0
• Views: 1,090
10-28-2013, 04:19 PM
28. ### memory study - parametric or non parametric test

Hello there, I've conducted a memory study which aim is to evaluate the effect of the spatial position of a visual object (left upper, left lower,...

• Replies: 4
• Views: 2,100
10-28-2013, 12:51 PM
29. ### What is the independent variable?

Hi… I am doing a study that involves looking at what attitudes Math students have towards people with mental illness, using one particular survey....

• Replies: 4
• Views: 2,981
10-27-2013, 09:28 AM
30. ### AMOS - comparing 2 models but are they nested?!

I really hope you can help. I'm just starting off with CFA and am struggling. I have a measure that has 20 items. There are competing models in...

• Replies: 3
• Views: 5,102
10-24-2013, 02:23 PM
31. ### sample weighting/rim weighting/raking

Hello, I have the following problem. I have a sample of people say 5 people as shown below, with information on some behavior of theirs, lets...

• Replies: 2
• Views: 4,135
svs
10-23-2013, 05:37 PM
32. ### Calculating sample size for a two way MANOVA using gpower?

Hi! Just wondering if anyone can help me with this? My normal go to textbook - Quantitative Psychology by Clark-Carter - doesn't cover...

• Replies: 0
• Views: 5,659
10-22-2013, 01:30 PM
33. ### Percentage Prevalence comparison (non-independent groups)

Hi all! I have a dataset which I think could potentially be very exciting but I am struggling to find how to analyse it! We have gathered...

• Replies: 0
• Views: 1,850
10-22-2013, 03:28 AM
34. ### Multiple Hypothesis For Chi Square Test of Independence

For a class assignment my particular data set I chose is going to use a chi-square test of independence. My professor has said that everyone needs...

• Replies: 0
• Views: 1,440
10-21-2013, 10:13 PM
35. ### Mixed Model ANOVA or MLM for small sample?

Hi there! So I just recently finalized my dissertation analyses and sent them to my advisor, and (as this process goes) he is now "recommending"...

• Replies: 1
• Views: 2,930
10-21-2013, 02:59 PM
36. ### Several covariates in ANCOVA?

I am running a study where I compare changes in brand attitudes across time for four brands, all within subjects. Between Time 1 and time 2,...

• Replies: 0
• Views: 1,120
10-21-2013, 12:38 PM
37. ### Repeated Measures, Manova etc.???

Hi, I am really struggling to find a design that suits what I want to test for so would really appreciate some help :) Basically I have one IV,...

• Replies: 0
• Views: 1,014
10-21-2013, 10:55 AM
38. ### Help with Dissertation

Right now I am working on my dissertation. As of right now I have two groups(DBT and CBT) with their means calculated pre-experiment, 6mo follow...

• Replies: 3
• Views: 1,487
10-20-2013, 03:42 PM
39. ### Analysing Likert Scale

Hi, I am a bit stuck so was wondering if someone could help. For my dissertation I'm seeing whether those who run more than 3 miles a week are...

• Replies: 3
• Views: 1,079
10-20-2013, 02:18 PM
40. ### Research Design…helping a beginner…

Hi, I am new at this, but I am doing a study involving two different groups. One group consists of Art students and the other of Math students. Both...

• Replies: 1
• Views: 13,102
10-20-2013, 03:40 AM
41. ### using neural network to make prediction

Hi all, I've been using a multilayer perceptron to build a classifiacation model in SPSS, and just need some help or direction on how to use the...

• Replies: 0
• Views: 1,954
10-18-2013, 11:02 PM

Hello, Everyone Right now I am doing my dissertation proposal for my PhD. I am doing my dissertation on recidivism rates in different types of...

• Replies: 1
• Views: 1,427
10-17-2013, 01:49 AM
43. ### Need helping with Anova code !

i'm new to forum. I must code Anova but now i don't know how to code it in C# , can anyone help me, my deadline is coming..

• Replies: 0
• Views: 2,349
10-16-2013, 11:39 AM
44. ### multiple chi square tests

i am hoping to get advice regarding whether it would be statistically valid/correct to run multiple chi square tests on a single sample, but for...

• Replies: 1
• Views: 1,332
10-16-2013, 08:09 AM
45. ### Need help with these ANOVA questionsplease!!!

If you can even help with any one of those it would be really helpful thanks! 1. An experimenter wants to test the effects of three types of...

• Replies: 2
• Views: 1,392
10-15-2013, 08:53 PM
46. ### Need help with a 2x2 between subjects design question please?

My Professor has asked this for a question: Think of a suitable design with appropriate IV's and levels and construct a 2x2 between subjects design...

• Replies: 0
• Views: 1,278
10-15-2013, 08:47 PM
47. ### How to use higher-order scale?

Hello, I am currently working on the development and validation of a new scale. The process went well so far, and I ended up with a higher order...

• Replies: 2
• Views: 2,963
10-15-2013, 02:39 AM
48. ### Cronbach Alpha for 3-item scale

I've read that cronbach alphas are also dependent on the number of items, and for a scale meant only for descriptive purposes, what is the acceptable...

• Replies: 14
• Views: 11,584
10-13-2013, 04:34 PM
49. ### Different Types of Mediation? What are the Criteria?

I am trying to determine how to describe a particular mediation result from my SPSS PROCESS output. From my reading of Baron and Kenny (1986), and...

• Replies: 1
• Views: 3,116
10-13-2013, 10:44 AM
50. ### small sample size

For my mcs thesis I am testing 6 ex alcoholics of which: 2 have been sustained from alcohol 2-5 years, two have 6-10 years and two have 11-15 years...

• Replies: 3
• Views: 2,018
10-11-2013, 05:41 PM
51. ### Moderated regression: Inconsistent results. Is it possible?

I performed moderated multiple regression using SPSS. Total sample size was 800. My variables were as follows: - Outcome variable (Y: measured in...

• Replies: 1
• Views: 1,268
10-11-2013, 04:31 PM
52. ### Mixed Design ANOVA Linear Trends

Hey, Data Set I have a relatively straight forward question. I have conducted a 2 x 8 mixed design anova which treats condition (2) as a...

• Replies: 1
• Views: 997
10-11-2013, 04:21 PM
53. ### Some help for moderation analysis in SPSS?

Hey everybody! Im stuck with my psychology masters thesis. Im studying if narcissism and a level of education moderate peoples ability to evaluate...

• Replies: 1
• Views: 1,952
10-11-2013, 11:25 AM
54. ### heterogeneity measures (betwwen-subject variability)

in a word association test, computing ADOM,NUR,NMR how can I use H statistic to compare distribution of responses of two groups? thanks.

• Replies: 0
• Views: 1,515
10-10-2013, 10:05 AM
55. ### SEM in AMOS, residual errors

Hello everybody, I need to report on a paper a model tested through SEM analyses in AMOS graphic, In the figure referees asked me to report...

• Replies: 0
• Views: 4,679
10-10-2013, 08:16 AM
56. ### Bayesian for dummies

I saw this blog post: http://vasishth-statistics.blogspot.com/2013/10/new-course-on-bayesian-data-analysis.html And opened the notes on Bayesian...

• Replies: 0
• Views: 2,820
10-09-2013, 08:51 AM

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