Electronic Performance Support Systems

Gloria J. Gery, a consultant in the fields of business learning and electronic performance support, is the author of "Electronic Performance Support Systems" (Gery Performance Press, 1991), the seminal book on EPSS.

Gloria Gery published a book in 1991 that defines electronic performance support systems (EPSS) as
"an integrated electronic environment that is available to and easily accessible by each employee and is structured to provide immediate, individualized on-line access to the full range of information, software, guidance, advice and assistance, data, images, tools, and assessment and monitoring systems to permit job performance with minimal support and intervention by others."

Every article that I researched start with Gery's definition. She is concerned the expert of EPSS.

Also in 1991, Barry Raybould gave a shorter definition:

a computer-based system that improves worker productivity by providing on-the-job access to integrated information, advice, and learning experiences.

According to an article that I found entitled, Types of Electronic Performance Support Systems:Their Characteristics and Range of Designs by Deborah Alpert Sleight in 1993 who is an Educational Psychologist at Michigan State University, types are some common uses for EPSS.

An electronic performance support system (EPSS) displays some or all of the following characteristics.

Computer-based: EPSSs are computer-based, which is what the "electronic" in their name indicates. There have been older attempts at performance support systems, such as a series of manuals, job aids, and other paper material. But it wasn't until the advent of powerful multimedia computers that optimal performance support could be made possible. Optimal support includes quick and easy access to the information needed at the time the task is being performed.

Access during task: EPSSs provide access to the discrete, specific information needed to perform a task at the time the task is to be performed. This is a two-part characteristic: 1) access to the specific information needed to perform a task, and 2) access to the information at the time the task is to be performed. If one part of this characteristic does not exist, then the characteristic changes and is no longer a performance support characteristic. The discrete, specific information provided may be:

* data: the type of data may be textual or numeric, such as prices, locations, and names. Or they may be visual, such as photographs and motion video footage. Or they may be audio, such as conversations, speeches, and music.
* instruction: the instruction may be a list of steps to take, a motion video showing a procedure, or a simulation of a task that allows the user to practice.
* advice: the advice may be an expert system that asks the user questions, then suggests the most appropriate procedure or step to do next.
* tools: the software tools may be a spreadsheet, a statistical analysis package, and a program that controls industrial robots.

This availability of information, instruction, advice and tools makes much prior training unnecessary.

This makes EPSS versatile and user adaptive.

She states that the benefits of EPSS are:
Used on the job: An EPSS provides information to people at their workstation on the job, or in simulations or other practice of the job. The information is provided at the worker's workstation as the worker sees a need for it. The EPSS can be used in simulations or other practice of the job, so that the worker learns both the information he or she will probably need when doing the job, and how to use the EPSS itself.

Controlled by the worker: The worker decides when and what information is needed. There is no need for a teacher, as the worker is guided by the needs of the task. The motivation is provided by the worker's desire to accomplish the task.

Reduce the need for prior training: The easy availability of the information needed to perform a task reduces the need for much (but probably not all) prior training in order to accomplish the task.

Easily updated: The very nature of an EPSS, that it provides the information needed to perform a task, requires that it be easily updatable, in order to keep the information that it provides current. The computerized nature of an EPSS makes updating faster and easier in some ways than in other media, such as print, video, or audio.

Fast access to information: The user must be able to access the needed information quickly when it is needed on the job. Otherwise the EPSS is no better than a set of manuals, which probably contain the information, but the information is difficult to find when needed.

Irrelevant information not included: The user is able to access only the specific, discrete information needed at that instant, instead of having to wade through loads of irrelevant information to find the few details needed. This is one of the problems with instruction that is not specific to a task; it forces the user to sift through it looking for the details needed. This sifting not only slows the user down, but can result in confusion.

Allow for different levels of knowledge in users: In order to speed up information access and understanding, an EPSS can provide minimal information for those who do not want details, yet, through the hypertext links in the databases and through optional tutorials, provide detail for those who do want more.

Allow for different learning styles: Through multimedia, an EPSS can accommodate users with varied learning styles, thus providing more optimal learning. The same information can be presented in visual, textual, and audio formats, with the user selecting the format.

Integrate information, advice, and learning experiences: An EPSS can integrate information, advice, and learning experiences for the user. For example, a database entry might describe a procedure. The user may not know if the procedure is the proper one to use, so he or she might turn to the advisor to find out. The advisor would ask the user some questions about what he or she needs to accomplish, then would suggest which procedure to use. The user might then access a tutorial on using the procedure, and practice it through a simulation, before actually performing the procedure.

Artificial intelligence: Artificial intelligence is an essential characteristic of EPSSs, according to Carr (Carr, 1992), but not according to Gery. I think that at this early stage of performance support system design and use, AI is not essential, but that eventually it will be one of the defining characteristics of EPSS. This will happen when research on EPSS and on AI has progressed further.

An EPSS is not an absolute system that contains all these characteristics. Rather, different systems will fall on a continuum of these characteristics. An EPSS displaying all these characteristics would be the ideal. Since performance support systems are still young, it is more likely that many will display only the key characteristics.