psychology

  1. J

    HELP - One-way ANOVAs/planned comparisons/correlation

    Hi all, I'm currently running a Psychology experiment: the effect of background music on memory and mood. I will be using SPSS to conduct two one-way ANOVAs (music + mood / music + memory), w/ planned comparisons. However, I also want to see the effect of mood on memory but I don't know how...
  2. J

    Is it possible to run ANOVA using Mean differences?

    I'm wondering whether it is possible, and how to run an ANOVA on mean differences rather than on means. I want to run a 2*3 ANOVA on multiple comparisons. I'm wondering if I should treat each mean-diff as t-test outcomes, and if the tests come out non-significant to treat them as 0, or if I...
  3. T

    Is this Experimental Design even possible? Help please!

    Hello all, First thank you in advance for any and all help given in response to this question. I've been searching this forum as well as other places online and I'm still confused about what methodology I should use in this experiment. DESIGN: Participants are given two questionnaires...
  4. C

    Transforming Negatively Skewed Independent Groups

    I have two independent groups, (roughly 30 in each) – and their performance on 3 different tasks, there are 10 scores in total for each group. The majority of them are negatively skewed so I know I have to reflect the data before I transform it – if the two groups have different maximum...
  5. S

    Mixed-effects logistic regression model for a 10-step continuum

    Hello, I am trying understand how to correctly build a mixed-effects logistic regression model in R. I believe my model is pretty simple and straight forward but I'm lacking in experience and uncertain I'm doing it correctly. Not being a statistician and struggling with stats, the specifics...
  6. B

    Interrater Reliability. Is MORE better?

    Which design is more powerful: testing interrater reliability with 2 judges or 4 judges? (citations appreciated)
  7. M

    New MPLUS Fanboy - Do we Have Mplus users here?

    Hello everyone, I was happy to find this forum. I am a MSc in Clinical Psychology and contrary to 99% of my colleagues I love research and doing empirical studies. I am currently doing a PhD in Nottingham (UK) and I have published few papers on behavioural addictions, mostly on Internet...
  8. M

    Help with non normality distribution. Transformations didn't work. Help!

    Hi, new to this forum. I'm writing up my MsC in psychology and I've got problems with my data. The study involved administering questionnaires to 157 young carers. The dependent variables I've got are: emotional symptoms, peer problems, prosocial behaviour, hyperactivity, difficulties...
  9. H

    Help with mixed between within subjects ANOVA

    I've recently performed a mixed between within subjects ANOVA. I have the results for the two main effects as well as the interaction effect. The interaction effect is significant and I am wondering what to report. Some places are telling me I can also report the main effects whilst others...
  10. A

    Confounding vs. Extraneous Variables?

    I need to know the difference between these two in a psychological research paper I am studying, in which there are two levels of independent variable. The first level is a group with reads in silence, the second group reads aloud. However, there is 48 males and only 26 females in the entire...
  11. N

    Need data analysis direction.

    I’m a grad student (clinical psychology) and research neophyte and need some direction. Once I gain statistical ground I would be more than happy to help others. Even though this is a mixed-methods study, I just need quantitative help. My focus is on perpetrators who harass the same victim...
  12. C

    please help with analysis confusion

    Hello Could you please help I am doing a study on leadership for my dissertation. I trying to find out which leadership style and the degree to which personality traits are preferred in a leader. In addition, I also want to find out which leadership style and the degree to which...
  13. C

    Power Analysis and Sample Size determination help!

    Hi all! I am new here so I hope my post is appropriate! I have searched the web and this forum and haven't been able to figure out how exactly I need to perform a power analysis for sample size determination (although I admit I didn't scroll through ALL of the results to my search on this...
  14. G

    One Factor Repeated Measures ANOVA questions

    Hi all, I have conducted a repeated measures ANOVA that has one factor with two levels. I also have a one between-subjects factor that has been taken into account. The results have come back to say that there is a significant difference between the within-subjects factor. My question...
  15. R

    Mixed ANOVA difficulty ! HELP NEEDED

    Hello... im relatively new to psychology statistics and struggling to understand some things. My experiment is a 2 (common vs distinct faces )x 2 (control vs experimental condition) mixed repeated anova design The problem is the interaction between the faces and the conditions - how do i...
  16. B

    which statistical analysis is suitable for this study?

    Hi guys, Briefly describing the study: - 1 IV with three levels (boring, neutral, & fun condition) - 3 DV's (time perception, task rating, mood) - Each subject takes part in only one of the three conditions (between subjects) What I'm confused with is whether this is a mixed design or a...
  17. A

    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 students asking them what study method they plan to use on an upcoming exam (highlighting, re-reading, or self-testing). All students were required to...
  18. C

    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 I wanted to look at was whether a treatment type had a positive influence on clients. Unfortunately, there was no ability to have a control group...
  19. A

    Thesis Statistics - - Outcome Known, but want to categorize Participant responses

    Thesis Statistics - - Possibly Kruskal Wallis test? Hi! I am beginning the process of determining which statistical tests to use for my thesis research involving high school dropouts and their anxiety levels in mathematics and testing situations. Here are my research questions: 1. What...
  20. C

    urgent stats help

    I need some help desperately. I would like to find out whether there is any difference between three conditions using a t test (I dont know if I need an independent or paired t test), and have tried this in SPSS but cannot seem to make sense of it. Basically I have 6 participants who watched...