I am conducting a Hunter-Schmidt meta-analysis. When a study assesses a construct using a one-item measure, what should I enter as the alpha?

I am conducting a Hunter-Schmidt meta-analysis. When a study assesses a construct using a one-item measure, what should I enter as the alpha? I calculated the N-weighted average reliability and...

10 November 2018 7,992 0 View

Justification for using Hedges and Olkin in IO Psychology with correlational data?

I would like to use Hedges and Olkin to run a meta-analysis; however, they do not provide a method for correcting for unreliability. My measures are not 100% reliable. Is there any justification...

11 December 2017 4,750 2 View

Is there research comparing the implications of need satisfaction depending on how the needs are satisfied (i.e. by the context or the person)?

09 October 2015 4,752 7 View

Should hypotheses always be based on a theory? Can someone refer me to a research paper that emphasizes the need for theory driven hypotheses?

Should hypotheses always be based on a theory? I will provide an example here without variable names. I am reading a paper where the authors argue that X (an action) should be related to Y (an...

08 September 2015 1,025 64 View

If a theory proposes that x relates to y, but there are so many boundary conditions that would eliminate the relationship, shouldn't we just change x?

If a theory proposes that x relates to y but there are so many moderating variables, that when considered, the relationship between x and y becomes non-significant, does it make sense to argue...

08 September 2015 9,333 8 View

Why do the residuals need to be normal when carrying out multi level modeling?

08 September 2014 3,269 7 View

Syntax for Log Likelihood in R?

I am analyzing results from a daily diary study in R using the nlme package. I am using hierarchical linear modelling and am not sure which code to use to examine whether the latter model fits...

06 July 2014 3,728 5 View

How to carry out Multilevel Modeling Person Centering of my predictor variables?

I am analyzing data from a diary study (multilevel modeling) and based on previous research I want to person-mean center my predictor variables. One of my predictors is work-family conflict (WFC)...

05 June 2014 8,127 9 View

Residuals in Multi Level Modeling: How can I examine whether the residuals are normally distributed using either SPSS or R?

I am conducting a cross-level interaction. How can I examine whether the residuals are normally distributed using either SPSS or R?

05 June 2014 1,994 4 View

I got 02 moderator values defining Johnson-Neyman significance regions. Is it an error?

Hi everyone, I am conducting research for my Master's thesis. I am using PROCESS by Johnson-Neyman to analyze my Moderator model. I test the relationship between Public Service Motivation and...

03 March 2021 2,350 2 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

Can anyone provide the Support vector regression code structure of LIBSVM MATLAB or python ?

Please, if Gaussian Parameter optimization is possible in this code structure

28 February 2021 278 3 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

Mixed ANOVA - help?

I'm currently working on a piece which asks to conduct an ANOVA - looking at the effect of sporting group (2 levels), and exercise trials (two trials with six levels). I've computed this all...

27 February 2021 9,626 4 View