The Usage of IDB Analyzer: From our Research on Homework Saki Ikoma Penn State EDTHP

Girls’ Advantage? Homework and Educational Achievement Gerald LeTendre (Penn State) Motoko Akiba (Florida State University) Sakiko Ikoma (Penn State) Guodong Liang (University of Missouri) Creative Commons image by Flickr user peapodsquadmom

Research Questions for Today Do 4 th grade girls do more homework, on average than 4 th grade boys?

Analytical Methods Data: The Trends in International Mathematics and Science Study (TIMSS) 2007 data Sample: 4 th grade students (36 countries) Analysis: OLS Regression with Jackknifing method using the IDB Analyzer by The International Association for the Evaluation of Educational Achievement (IEA)

IDB Analyzer 1.A free-of-charge software by IEA for the purpose of merging and analyzing large- scale data 2.Windows Only (Mac: Possible with VMware, etc.) 3.Any Data from IEA can be used: TIMSS, PIRLS, TEDS-M (PISA or TALIS?) 4.IDB Analyzer only creates syntaxes to operate your commands on SPSS

Good Things about IDB Analyzer You can merge large-scale data without any complicated procedures. All the auxiliary variables (e.g. weights etc.) will be automatically added when you choose your variables. You can use jackknifing method. IDB Analyzer creates an excel file and graphs automatically for you.  There are some limitations for analysis: e.g. You cannot do ANOVA.

Start IDB Analyzer

Automatically Selected! Select countries you focus and hit the button (You can also select all countries at once). Then hit Next at the bottom!

When you select your variables… ID and weight variables are automatically selected!

File: T07G4HWGENoriginal.sav Let’s start SPSS! Select all (Control+A), then RUN! The syntax is already saved.

Be careful! Still running! When it’s done, you can open the dataset on SPSS. Based on your codebook, next step is recoding your variables of interest on SPSS.

After you ran syntax, you save it as a new dataset

Analyzing with IDB Analyzer

You can use your RECODED dataset Make sure you select a right weight. You have some options for your analysis! You can also use TIMSS test scores if you want (in order to do that, you have to include PVs when merging the data). If you want to do multiple imputation, you can do that on SPSS, save it as a new dataset in your TIMSS folder, and use it on IDB Analyzer.

In this case: DV: Homework Time (G4PHWGENERAL) IVs: Gender (G4GIRL) and Student SES (G4PSES) Weight: Total Student Weight (TOTWGT) You choose DV and IVs (Country ID is the must). Then, generate the syntax (Start SPSS), select all, and run it.

Below is the SPSS Output file, but also… 4 Excel Files are AUTOMATICALLY generated - T07HWGENREG_anova - T07HWGENREG_Coefficients - T07HWGENREG_Descriptives → Check this out! - T07HWGENREG_Model International Average is calculated at the bottom You will get ALL countries’ data at once like this.

Opening T07HWGENREG_Coefficients.xlsx… Making data easy-readable

Any Questions? Saki Ikoma Penn State EDTHP