Task Analysis Review

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Task Analysis

Underlying components

5-Task analysis

4- Task description

3-Task allocation

2-Task descomposition

1-Task taxonomy

Significance/usefulness

Newer focus: Team analysis - create new teams with fewer members

Development of instructional curriculum

Determine personnel selection criteria

Design of man-machine interfaces

Views of tasks

Interaction of system components

Goals to be achieved for succesful task completion

Recording of actions by an experienced user

Process and sources of data

Existing documentation

Interviews

Obsevations

primarily a data gathering and classifying exercise

Relantionship to expertise study

Popular TA approches

Behavioral Task Analysis - Traditional approach

Blended techniques

Marti's Task Centered Design

Entity-relations task analysis

ATOM - Analysis for Task Object Modeling

Environmental techniques

TAEMS (Task Analysis for Environmental Modeling and Simulation)

Knowledge-based techniques

"look at what users need to know about the objects and actions involved in a task, and how that knowledge is organized."

SSADM - Structured System's Analysis and Design Methodology

Task Analysis for Knowledge Description-TAKD, sometimes referred to as Cognitive Task Analysis

Task descomposision and secuencing

Hierarchical task analysis (HTA):

Definitions

how a task is accomplished, including a detailed description of both manual and mental activities, task and element durations, ..read more

ask frequency, task allocation, task complexity, environmental conditions, necessary clothing and equipment, and any other unique factors involved in or required for one or more people to perform a given task.

also concerned with what information is necessary for each part to complete its job, as well as the process or method of completion.

"belong to a collection of evaluation techniques designed to help uncover details about the human part of a systems equation."

Other names

History

Annett and Duncan proposed a more general form of TA called Hierarchical Task Analysis (HTA) -1960's

original TA was used mostly for evaluating human activity and motion.

Increased popularity in the human factors community

-Gilbert-1911 - Motiion and time studies. Behavioral Task analysis-Industrial Engineering- Basis Applied Behavior Analysis

F. Gilbreth, Motion Study, New York: D. Van Nostrand Company, 1911

Fields/areas of application

Particularly used in design and evaluation fields

INSTRUCTIONAL DESIGN

Cite Smith and Ragan TA and IPA

HUMAN FACTORS/ERGONOMICS

See study by Lippa on everyday self-managment expertise

ENGINEERING PSYCHOLOGY/Cognitive engieering

PROCESS CONTROL

HUMAN COMPUTER INTERACTION (HCI)

"Each domain modifies the basic workings of a TA for its own purpose - each with a different emphasis and desired result."