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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: 32,243
11-10-2005, 12:21 AM
1. ### Need Help Determining Analysis for Likert Scale Data

Hello, I need help determining what analysis to run. I have 2 independent variables (a control and experimental condition) with 4 dependent...

• Replies: 5
• Views: 110
Today, 12:27 PM
2. ### Assessing sample-size after data collection

Hi all! I ran a correlation study with the maximum sample size that was possible, and found some strong significant effects as well as non-signifiant...

• Replies: 3
• Views: 126
Today, 10:57 AM
3. ### Testing the trajectory of response type - unsure of which analysis to use

Hi everyone, Hoping someone might be able to help. I want to test a prediction that participants will progress through a trajectory of three...

• Replies: 4
• Views: 274
11-14-2017, 10:29 AM
4. ### US response to "imaginary interference in their

Oceania Sevens Championship 2017 Live Stream

• Replies: 0
• Views: 147
11-09-2017, 05:35 PM
5. ### Multivariate outliers

Hi everyone! I have a question about detecting multivariate outliers in a correlation analysis. I'm calculating Spearman correlations between 5...

• Replies: 0
• Views: 247
10-27-2017, 03:33 AM
6. ### To what extent are differences in levels of IV associated with many DVs?

My independent variable consists of several different levels (working, sleeping, running etc.) and there are many dependent variables (heart rate,...

• Replies: 0
• Views: 231
10-21-2017, 04:24 PM
7. ### Need URGENT help with analyzing the data from my study!

EDIT: -SOLVED- -Spectre

• Replies: 0
• Views: 342
10-20-2017, 01:46 PM
8. ### Reporting results p > .05 justified?

Hi all, Recently I did a field study where I investigated recycling behaviour in the office. We did a baseline and post-intervention measurement...

• Replies: 0
• Views: 74
10-19-2017, 05:07 AM
9. ### Test to measure interaction effects among factors on a dependent variable

Hi all, I am a new Statistics learning (1st year graduate student) and I would appreciate your opinion on my research design to answer a specific...

• Replies: 1
• Views: 250
10-18-2017, 08:47 AM
10. ### Book for HLM

Hi everyone. Can anyone recommend a good book for studying HLM? Thanks for any help!

• Replies: 5
• Views: 276
10-17-2017, 06:18 AM
11. ### Can I calculate Cohen's d on z scores?

Hi everyone, I am trying to calculate the size of the difference between the means of two groups in a psychological test. However, I am not using...

• Replies: 0
• Views: 299
css
10-15-2017, 08:16 AM
12. ### p value of .051

Hello everyone, If I have a p-value of .051 is considered over .05? Should I do not reject the null hypothesis? Thanks

• Replies: 5
• Views: 393
10-10-2017, 05:13 PM
13. ### Which test to use for binary variables and concerns about multiple comparisons

Hi all, I am working on a research project attempting to compare two groups of subjects' (call them A and B) brains based on MRI results. Let's...

• Replies: 3
• Views: 425
09-28-2017, 09:14 PM
14. ### Discriminant Validity using Correlation Matrix

Hi.. I need help regarding establishing discriminant validity of an adapted scale using the correlation matrix. Original scale had 36 items. I...

• Replies: 0
• Views: 277
09-26-2017, 11:29 PM
15. ### measuring same variables for unrelated topics within subjects

Hello everyone, Purpose of the study: I want to find out how the perceived competence and warmth of an activist group relates to whether someone...

• Replies: 2
• Views: 312
eku
09-25-2017, 10:42 AM
16. ### Regression with change scores

I handled it. you can close to topic.

• Replies: 0
• Views: 394
09-17-2017, 05:31 AM
17. ### Decision Making Attributes Statistical Significance Tests

Hi All So I am looking for some advice regarding the best test to use for the scenario below (the data itself is not normally distributed and the...

• Replies: 1
• Views: 649
09-04-2017, 05:58 AM
18. ### A problem with covariates

Hello everyone. I have a problem with covariates. I have a database with a mixed design, with a manipulation as a within-subject variable. Each...

• Replies: 0
• Views: 570
08-25-2017, 04:23 AM
19. ### Bradley-Terry paired comparisons ranking with SPSS

Hey everyone! I apologize if this is a repeated topic; I ran the search function in different browsers, but the function did not work. I would...

• Replies: 0
• Views: 559
08-24-2017, 07:16 AM
20. ### Comparing the academic performance between two classes

Compare the academic performance between two classes Dear all, I kindly need your help. Here is my background. I am a secondary school teacher....

• Replies: 6
• Views: 585
lcy
08-18-2017, 10:51 PM
21. ### Analysis, Thesis on Mindfulness

Hey guys, I am currently struggling with identifying the appropriate statistical method for my bachelor thesis. Participants are measured over...

• Replies: 3
• Views: 428
08-18-2017, 03:24 AM
22. ### correlation of age at onset of "sexual abuse" of minors and impairment

Hello, I have a question about the following things: Some studies define sexual abuse of minors as unwanted sexual contacts before the age of...

• Replies: 1
• Views: 245
08-17-2017, 11:30 PM
23. ### Reliability Analysis for Ability Test (Signal Detection)

Good day all, I have been tasked with working out the alpha for an ability test which measures only two factors: Median Reaction Time (in ms) and...

• Replies: 0
• Views: 314
08-02-2017, 01:42 AM
24. ### Graphing nonlinear results

Not sure as newbie where to best post this question. A graph in a psychology article has a graph for survey scores. Would like to figure out formula...

• Replies: 7
• Views: 714
07-22-2017, 05:59 PM
25. ### Filling in Anova Tables

Hello, Can anyone provide a step by step example of how to go about filling in the missing areas in this Anova output table for my homework...

• Replies: 0
• Views: 457
07-20-2017, 08:15 PM
26. ### Which test in SPSS should I use?

I'm trying to work out whether there are relationships between two IVs and one DV (I'm not interested in correlations between IVs, though they may...

• Replies: 0
• Views: 1,300
07-18-2017, 08:51 AM
27. ### blank spaces on SPSS output

Hi, I am running a 2x3 repeated measures ANOVA. My IVs are both categorical variables and my DV is a continuous variable - score (out of 200). ...

• Replies: 0
• Views: 675
07-13-2017, 05:45 AM
28. ### Too many variables - Multivariate analysis of covariance - New to this

Hi there. This will be my first post on the forums, I'm a Psychology student currently conducting research at an internship. We treat IDD...

• Replies: 2
• Views: 633
07-11-2017, 05:19 PM
29. ### Power analysis for 3-way interaction with 1 between-, 2 within-subjects factors

Hi all, I am trying to use G*Power 4 to compute the sample size that I will need to detect a 3-way interaction (2 x 2 x 2) in a mixed-effect ANOVA...

• Replies: 0
• Views: 484
07-10-2017, 04:29 PM
30. ### Multiple Scales within a Moderator

Dear all, I am conducting a moderated multiple regression analysis for my research. One of my moderators comprises 5 different scales (with their...

• Replies: 0
• Views: 535
07-10-2017, 01:59 AM
31. ### Mixed methods ANCOVA

Hey, I wondered if anyone could help me out. I am trying to conduct an ANCOVA for my masters project and am confused on how to enter the data. So...

• Replies: 0
• Views: 356
07-09-2017, 05:17 PM
32. ### Confirmed model doesn't fit with different population. Should I return to EFA or not?

I am trying to confirm the model for a 16-item measure. It has been confirmed for a homogeneous group, however, I want to determine if the model fits...

• Replies: 1
• Views: 387
06-29-2017, 08:39 PM
33. ### Question about 3X3 repeated measures ANOVA and simple effects

First time posting here. I have conducted a transcranial magnetic stimulation study and am analyzing the results as a 3x3 repeated measures ANOVA....

• Replies: 1
• Views: 574
06-24-2017, 08:59 PM
34. ### Let me know a better analysis method?

I have two IVs; "collection method" (online and classroom) and "culture" (A and B), one continuous variable ("Age") and 8 DVs (well-being variables...

• Replies: 13
• Views: 1,327
06-24-2017, 12:55 AM
35. ### Question regarding Repeated measures 3-way ANOVA for thesis

Dear Readers, I am new to this forum and I have a question regarding my output/researchdata. I am currently analyzing my hypothesis with respect...

• Replies: 1
• Views: 378
06-23-2017, 04:36 PM
36. ### Need help with performing the correct analysis?

I have: Two categorical Dependent Variables: Treatment(A, B), and Genotype (WT, HET). Two continuous Independent Variables: Latency (seconds),...

• Replies: 1
• Views: 669
06-14-2017, 01:16 PM
37. ### ANOVA und Cohens d`?

Hi there! So, i did a psychological study where i tried to manipulate flow. In that study every subject had to play a racing game 6 times and...

• Replies: 1
• Views: 557
06-14-2017, 09:45 AM
38. ### Comparing a test vs gold standard in 4x4 matrix

Hello everybody, I am trying to figure out how to measure the specificity and recall of a test I'm working in. The test is aimed to classify items...

• Replies: 0
• Views: 617
06-13-2017, 04:24 AM
39. ### Simple survey analysis questions

Hello all, I've been asked to assist with the statistical analysis of some survey data, and I'm a bit of a novice with this type of analysis, so...

• Replies: 0
• Views: 2,000
06-11-2017, 03:38 PM
40. ### Sampling in Randomized Evaluation

I am designing an experiment in which the treatment is administered through information priming. I plan to conduct the experiment in a large city...

• Replies: 0
• Views: 497
06-11-2017, 03:19 PM
41. ### Software to perform conjoint analysis

What software supports conjoint analysis?

• Replies: 0
• Views: 662
06-11-2017, 05:28 AM
42. ### ANCOVA with dichotomous dependent variable - How?

Hi everyone! I am a new subscriber with a little talent for statistics and I study developmental psychology :) I need to perform and ANCOVA on a...

• Replies: 3
• Views: 734
06-09-2017, 06:28 AM

Hi everybody, I am a master student doing my first quantitative analysis. I want to analyze if there is a relationship between a gender quota...

• Replies: 1
• Views: 1,441
06-07-2017, 05:07 AM
44. ### Is there any justification to treat a sum of ordinal scores as a ratio score?

More than once, I noticed that researchers sum ordinal scores of e.g. items of a psychometric test to gain a total score. This score is e.g....

• Replies: 1
• Views: 868
06-04-2017, 05:05 PM
45. ### Multiple regression question

Hello everyone, I cannotfind the solution to following question and dont really know how to exclude any alternative. We regress an outcome...

• Replies: 9
• Views: 1,076
06-02-2017, 10:39 AM

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: 2
• Views: 2,161
06-02-2017, 10:39 AM
47. ### 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: 1
• Views: 1,017
06-02-2017, 02:32 AM
48. ### 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: 1
• Views: 1,296
06-02-2017, 02:19 AM
49. ### iPod Track Listening & Biological Samples— Within-Subjects Test/Regression?

I am analyzing data in which participants listened to iPods and provided biological samples on the same days. The iPod Listening Intervention was 1...

• Replies: 1
• Views: 833
06-02-2017, 02:07 AM
50. ### One way ANCOVA - Data failing assumption of linearity

Hello I'm working on my Msc in Psychology thesis, and I've chosen to explore if there are group differences between Internal vs External...

• Replies: 1
• Views: 1,277
06-02-2017, 01:56 AM
51. ### Paired sample t test vs Wilcoxon signed ranks test

As part of assessment, we are using a five-question multiple choice pretest and posttest. We have been using the Wilcoxon signed ranks test to...

• Replies: 1
• Views: 1,088
06-02-2017, 01:52 AM
52. ### Justifying use of hierarchical multiple linear regression (MHLR)

Hi, My research question is looking at the predictors of the transfer of training. I have performed a series of separate hierarchical...

• Replies: 0
• Views: 613
05-31-2017, 10:58 AM
53. ### Is it possible or meaningful to run an ANOVA on only two groups?

Hi, we have been given a bunch of homework questions and i can't seem to work this one out. "Is it possible or meaningful to run an ANOVA on...

• Replies: 3
• Views: 899
05-30-2017, 09:52 PM
54. ### Forced choice test with six options - analysis

Dear all, I had a profile here before, but I cannot access it anymore since I registered it on an e-mail I don't have anymore (since I changed...

• Replies: 0
• Views: 766
05-30-2017, 04:41 AM

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