Jessica Horst

Ph.D. Candidate, University of Iowa

I have created several documents, excel file and Matlab scripts that I would like to share with others. Please use these if they are of interest to you. I would be very interested to know if they are helpful (please send me an email and let me know!)
Matlab Scripts

Please find below Matlab scripts that I think will be useful:

I created Order Generator to calculate random strings of numbers to help with counter balancing in experiments. To use this to counter balance you will need to know how many random orders you want (most likely = n) and the number of sets or trials that you have. Matlab will prompt you for these items and save the results in a file called orders.txt. You can then open this file in excel. You may need to highlight the numbers in excel and then go to the data menu and select "text to columns" and click "finish." Now, each number can be replaced using the find and replace function to be the name of a set.

The script numDec.m was specifically created to use with the Hebbian Normalized Recurrent Network to determine the number of hidden (aka decision) units necessary depending on the given number of input patterns, which that in that model is equal to the number of input units.

For analysing sequential touching data I have created a script to determine if a child is a categorizer or non-categorizer based on the criteria from Hoben and Dahlin, 2000. In this file you will be prompted to enter the number of touches to each category, if you use this script, please cite that publication.

Excel Files

For sequential touching studies, I have created a file that will calculate mean run-lengths for complete samples (up to 30 touches) and the mean run-length for each category. In this file, you will want to go to cells B4 and M4 (and K4 and P4 if you have a second part, perhaps after a demonstration) and change "roll," "not roll," "animal," and "vehicle" to be the names of your categories. After you change those cells, copy and paste the new formula down to lines B33 and M33 (and K33 and P33).