1. L

    Median in R

    I am currently working on the data from my research. Before I can run the analysis I need to find the median for a specific variable per participant. My data set consists of all the trials per participant and per trial there is data of that specific variable. How can I calculate the median for...
  2. L

    Median in R per participant for a specific variable

    I am currently working on the data from my research. Before I can run the analysis I need to find the median for a specific variable per participant. My data set consists of all the trials per participant and per trial there is data of that specific variable. How can I calculate the median for...
  3. P

    Confused about what type of ANOVA is required

    I'm doing a study for university which involves a series of participants (about 150), undertaking a study with 3 conditions and a control condition. The participants are all of different ages and are both male and female (though not an equal number of each) and all participants see all...
  4. U

    Which test to use? one predictor variable and 3 dependent variables

    Hello, I'm hoping someone can help me. I am conducting research for my thesis looking at relationship between social connectedness (IV), and diabetes distress, diabetes self-management and perceived competence (DVs). All are continuous variables measured on self-report likert scale...
  5. C

    Multivariate Analysis of Variance

    Hi all I am currently preparing my research for ethics submission but trying to establish an accurate sample size using G*Power. Apologies in advance if I do not explain this accurately and will try to simplify it as much as possible. I have three groups that will be determined based on...
  6. D

    Problem with repeated-measures GLMM in SPSS for psycholinguistic study: Failure to converge

    I'm trying to run a generalized linear mixed model in SPSS, with a continuous response variable (ResponseTime), SubjectID as a random factor, Items as a repeated measure, and five fixed factors: three categorical subject variables (Sex, Handedness, Familial Handedness) and two categorical item...
  7. S

    Dissertation Analysis Confusion

    Hello all and thanks for any future responses. I am doing a study looking at whether three independent categorical/dichotomous variables (gender, Greek status, and class status (i.e. freshman vs senior)) influence a person's disordered eating behaviors and attitudes among college students...
  8. N

    Best approach of reliability

    Hi If im trying to measure the reliability of my test, which is aimed to measure defense mechanisms. and theres 2 types of defense mechanism, for example avoidance and emotional support, what is the best approach of reliability I should use? is my test considered unidimensional?
  9. B

    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 I have 2 IVS; group (treatment or control) and time point (T1 and T2). I have a covariate (which a bed use at T0) and my DV is bed use - looking...
  10. L

    All this data and IDK what to do with it.

    I need assistance. I am an undergrad social work major in a stats class. I have access to excel and SPSS. My research question: Does the lack of diversity in X Unified school district teachers contribute to racial disparities in suspensions? I have collected the data for 2014-2015 for 9 high...
  11. U

    How do i analyse interaction in 3x2 ANOVA in SPSS

    Hi, i've discovered a significant interaction in my 3x2 ANOVA in my psychology dissertation (3x2 Between Subjects Design, using SPSS). I was wondering which post-hoc analysis i should use to study this interaction. My tutor has provided us with example instructions, which involve splitting the...
  12. A

    Which inferential stats test to use? PLEASE HELP

    Hello all, Someone please help. I'm conducting a study on how group gender ratios influences stereotype threat within career choices and level of gender identification, as well as how primes that blur intergroup biases can influence these DV's as well. IV1: Gender ratio (categorical) (3...
  13. L

    Multiple regression

    Is there any way you can control for a variable using multiple regression? In order to see if the relationship reduces or disappears between an Iv and DV?
  14. I

    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 cats, 5 dogs). 7 point scale (not at all - very much). Used % as marker of neutral scores.
  15. V

    Mixed ANOVA - How to interpret and write up results

    Hello everyone! I'm struggling with my first-ever data analysis using SPSS. I have conducted a mixed ANOVA using a total number of objects kept before and after an emotional prime as repeated measures and the condition (the prime - positive vs negative) as the between subjects factor. I have no...
  16. P

    Wilcoxon Signed rank test, Students's T-test, or a mixture of both?

    Hello! For my dissertation I am looking at the temporal order of physiological and behavioural events before a voluntary action. I have 12 different repeated measures variables including: Time of intention (W), Readiness potential 1 (as measured by task A) Readiness potential 2 (task A), RPmax...
  17. H

    Which statistical analysis to run?

    Hi All, I'm currently working on my psychology project however, struggling with the results section; I'm not quite sure which analysis to run. My research is on problematic internet use and impulsivity. I have a questionnaire on problematic internet use which has 3 scales of obsession...
  18. R

    Power Analysis

    Hi there, I am currently writing a statistics report which has to cover 2 questions: Firstly, what the correlation is between two different test scores of 30 participants. Secondly, what the power of the study is. I am really struggling to grasp what the pro's of doing a post-hoc power...
  19. D

    Decomposing a mixed model custom ANCOVA

    Here is my scenario. The first paragraph tells a bit about the methods we used to give you a frame of reference. The second tells about the first analysis and the third about the second. I can provide more details if anyone thinks it could help. I recently collected data for a study about how...
  20. S

    Paired samples t-test for an interaction

    Hi all, I'm currently writing up my final project for university. The general idea is testing the role of language on emotion perception in faces, with the hypotheses being that emotion words will facilitate more accurate perception of emotional faces than do neutral words (i.e. more correct...