If you are running Netscape or Internet Explorer from a PC (windows 95 or NT), you can use the IPL Plugin for running many plugin-enabled experiments on the IPL site. Currently, the IPL Plugin only runs under Windows95 and NT. The IPL Plugin is supported by both Netscape Communicator and Internet Explorer. It is also supported by Netscape Navigator 2.0 and above. Since, however, we recommend using Internet Explorer 4.0 or Netscape Communicator 4.0 when interacting with the IPL site, the following download/installation instructions will be tailored to those browser versions.
The IPL Plugin is a Netscape attachment program that supports the Reaction Time experiments that you will see on the IPL site. The IPL Plugin not only supports a large number of current experiments, but a great many experiments planned for the future. Besides enabling the rapid development of various kinds of experiments involving the recording and measuring of reaction times, the IPL Plugin allows for highly accurate recording of reaction time data at a level of accuracy not possible with Java applets.
But first, in order to be able to run these experiments, you will need to set some things up on your computer. This will take about 5 minutes.
You will need to optain a file from the IPL site and install it on your machine. This file is a "plugin" file that Netscape uses to run these experiments. A browser plugin is a program that extends the capability of Netscape and Internet Explorer in order that it do things it can not otherwise do. Since the designers of Netscape and Internet Explorer didn't plan on people doing Experimental Psychology over the Web, we have to add that capability ourselves.
Getting and installing the IPL Plugin is not hard, but you have to do things in a certain order so that your browser can find the things it needs in order to run the Plugin experiments. Once you have installed the IPL Plugin, you will not have to do so again: after once installing the plugin, each time you visit the site, you can run all of the current Plugin experiments as well as those we develop in the future.
In a moment, you will read detailed blow-by-blow instructions for downloading and installing the IPL Plugin. Here, we provide an overview of what you will need to do. This overview will be followed by detailed instructions. In a nutshell, what you will to need to do is as follows:
1. Download the IPL Plugin self-extracting archive file onto your machine. This will involve getting (or "downloading") a single file called NPIpl.exe.
2. Run the NPIpl.exe program in order to extract the IPL Plugin file (NpIPL.dll) into the proper directory so that your browser can find it.
3. Once you have extracted the IPL plugin file onto your computer, and placed it into the correct directory, you will need to close your browser entirely.
4. Restart your browser (after having first closed it). Once you have restarted your browser, if you are using Netscape, you can check to see if the plugin was installed correctly by clicking on the "Help" menu item and then clicking on "About Plugins". All of the plugins currently installed in Netscape will be shown. Look for the one that has the title "Internet Psychology Lab Plug-in. If you see it listed, then you know that it has been correctly installed for Netscape.
What follows is a detailed step-by-step instruction guide for downloading and installing the IPL Plugin. You should carry out each step as you read it.
The first thing you will need to do is to get (or "download") the IPL Plugin . Here is a step-by-step guide for doing that:
1. Click Here to get the self-extracting archive file (called NPIpl.exe).
2. Go to the folder where NPIpl.exe was download to (typically, this will be your Temp folder), and run it.
A small window will appear. You will be asked which folder to "unzip" the IPL plugin to. The name "C:\TEMP" is displayed. You need to change this to the appropriate folder for your browser.If you are using Netscape Communicator 4.X, type in the following folder name:
If you are using Netscape 3, then type in the following folder:
If you are using Microsoft Internet Explore, type in the following folder:
C:\Program Files\Plus!\Microsoft Internet\plugins
If you are having problems finding the correct plug-in folder, try searching for it under the START menu -->FIND -->FILES OR FOLDERS--> and type plugins. This will show you all files and folders on your computer named "plugins". Look for the "plugins" folder nested within the folder with your browsers name. This is where NPIpl.dll should go.
Once you have typed in the correct folder, click on the Unzip button. A small window will appear, telling you that "1 file(s) unzipped successfully. Click the OK button on that small window. Then, click Close on the WinZip Self-Extractor window.
You have now successfully downloaded the IPL Plugin.
3. Now there is one final step that you need to do if you want to try out the plugin with one of the IPL Plugin experiments:
***** You must restart your browser *****
If you try to run one of the Plugin experiments right now, without first closing your browser and then starting it again, it won't work. This is because both Netscape Communicator and Internet Explorer needs to restart in order load the plugin; otherwise, they don't even know that the IPL plugin is there.
REMEMBER: In order for the IPL Plugin to work you have to first close your browser, and then start it up again.