Hierarchical task analysis:
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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
London [u.a.]
Taylor & Francis
2001
|
| Edition: | 1. publ. |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XIX, 270 S. graph. Darst. |
| ISBN: | 0748408371 074840838X |
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| 100 | 1 | |a Shepherd, Andrew |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Hierarchical task analysis |c Andrew Shepherd |
| 250 | |a 1. publ. | ||
| 264 | 1 | |a London [u.a.] |b Taylor & Francis |c 2001 | |
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Record in the Search Index
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|---|---|
| adam_text | Titel: Hierarchical task analysis
Autor: Shepherd, Andrew
Jahr: 2001
Contents
Figures ix
Tables xv
Preface xvii
Acknowledgements xix
Introduction 1
Organisation of the book 3
Chapter 1 Task analysis, concepts and terminology 7
Introduction 8
Systems thinking 8
Systems thinking in describing human skill 11
Human performance in systems 13
Justification of HTA in systems terms 16
Some terminology so far 21
Concluding comments 23
Chapter 2 HTA - a task analysis framework 25
Introduction 26
The main strategies of HTA 26
HTA - a Framework for Analysing Tasks 32
Using the framework 39
Concluding comments 39
Chapter 3 Plans and complexity 41
Introduction 42
Different sorts of plan 42
Composite plans 56
Unravelling complex plans 56
Concluding comment 64
Chapter 4 Flexibility, constraint, cognition and context 67
Introduction 68
Inferring cognitive operations 72
Focus and Bias 74
Modelling and evaluating strategies 74
Situating cognition 77
Identifying strategies off line 85
Concluding remarks 85
v
vi Hierarchical Task Analysis
Chapter 5 Representing and recording HTA 87
Introduction 88
Reasons for representing and recording 88
Hierarchical diagrams 89
Numbering the analysis 92
Tabular Formats 93
Representation of plans in diagrams and tables 97
Computer aids in recording task analysis 98
Concluding remarks 100
Chapter 6 Analysis of tasks - some illustrations 101
Introduction 102
Changing a cartridge 104
Process control 104
Task analysis of a batch operation 106
Task analysis of a continuous process control task 109
Air-traffic control 111
Minimal Access Surgery (MAS) 113
A customer service task 116
Using a wordprocessor 117
Mechanical maintenance 120
Nursing 124
Management 124
Staff supervision - nurse in charge of a ward 131
Concluding remarks 133
Chapter 7 Making human factors design decisions within HTA 135
Introduction 136
Considering the design options 137
Making design choices 143
Context and constraint and design decisions 147
Collating and resolving design decisions 151
Developing detailed design within the system life-cycle 152
Concluding remarks 155
Chapter 8 Teams and jobs 157
Introduction 158
Collaborating on a common goal 159
Assessing workload 164
The tasks of within a working team 168
Concluding remarks 173
Contents vii
Chapter 9 Information and skill 175
Introduction 176
The reliance on information in tasks - some examples 177
Characteristic problems with information and control 179
Identifying information requirements in operations 185
Types of operation 187
Identifying information requirements in plans 193
Representing and situating information and control 193
Concluding remarks 195
Chapter 10 HTA and training 197
Introduction 198
Learning practical skills 198
An informal training intervention 200
Elements of a formal training programme 205
Part-task training 209
Simulation for training 213
Concluding comment 216
Chapter 11 Designing support documentation 217
Introduction 218
Common types of support documentation 219
Determining where job-aids should be employed 225
Relating job-aids to training 226
Representation of job-aids and the link to HTA 228
Concluding remarks 230
Chapter 12 Human resource management issues 231
Introduction 232
Establishing a proper task description 232
Making human resource management decisions 234
Concluding comment 238
Chapter 13 Conclusions 239
The method 239
The application of HTA to different domains 241
The application of HTA to supporting different design solutions 242
Cognition and flexibility 243
Tasks and contexts 243
HTA and other task analysis methods 244
viii Hierarchical Task Analysis
Chapter 14 Notes 245
Chapter 1: Task analysis, concepts and terminology 245
Chapter 2: HTA - a task analysis framework 247
Chapter 3: Plans and complexity 254
Chapter 4: Flexibility, constraint, cognition and context 254
Chapter 5: Representing and recording HTA 255
Chapter 6: Analysis of tasks - some illustrations 256
Chapter 7: Making human factors design decisions within HTA 257
Chapter 8: Teams and jobs 257
Chapter 9: Information and skill 258
Chapter 10: HTA and training 258
Chapter 11: Designing support documentation 259
Chapter 12: Some human resource management issues 259
References 260
Index 267
Figures
Figure 0.1 A simple illustration of Hierarchical Task Analysis. 2
Figure 1.1 Systems and subsystems in a hypothetical transportation system. 8
Figure 1.2 Inputs and outputs to related subsystems. 9
Figure 1.3 The expanded operator-system interaction, showing information
and feedback loops. 13
Figure 1.4 The human-task system expanded to show additional elements
of human performance. 14
Figure 1.5 The human-task system showing the influences of the environment. 16
Figure 1.6 The hypothesis and test cycle 19
Figure 2.1 The basic cycle of decisions during task analysis. 26
Figure 2.2 A simple information-model of an operation. 29
Figure 2.3 The cycle of task analysis decisions. . 33
Figure 2.4 Higher levels ofredescription of a maintenance task carried out by
packaging line engineers. 35
Figure 2.5 The packaging line operator s task. 35
Figure 2.6 How the line operator initially dealt with faults on the line. 36
Figure 2.7 How the line operator should deal with faults on the line to
provide the engineer with better support. 36
Figure 3.1 Fixed sequence element in a plan. 43
Figure 3.2 A contingent fixed sequence element. 44
Figure 3.3 Typical contingent sequence plan elements. 45
Figure 3.4 This represents the same activities as Figure 3.2 but plan is
represented as a fixed sequence. 46
Figure 3.5 A supermarket checkout task. 47
ix
x Hierarchical Task Analysis
Figure 3.6 Part of the task analysis of developing a black and white film.. 48
Figure 3.7 A time-line plan for starting up 3 interdependent units. 50
Figure 3.8 Controlling a distillation train. 51
Figure 3.9 Deal with a tele-sales customer. 52
Figure 3.10 Typically, procedural cycles fit into jobs as a component of a
general shift cycle. 53
Figure 3.11 The common remedial cycle. 53
Figure 3.12 The common remedial cycle in a task analysis. 54
Figure 3.13 Maintaining a baby s temperature in hospital — an illustration
of a remedial task in which the cycle of activity is implicit
within the plan. 54
Figure 3.14 The chlorine production complex. 57
Figure 3.15 A first attempt at redescription of the chlorine balancing task. 58
Figure 3.16 An interim revision of the chlorine balancing task analysis. 59
Figure 3.17 Further revision of the top level of the analysis of the chlorine
balancing task. 60
Figure 3.18 Re-examination of Establish new resource balance for system. 61
Figure 3.19 The revised task analysis for the chlorine balancing task. 62
Figure 3.20 Summary of plan elements. 65
Figure 4.1 Representation of a conveyor belt operation in an automated
warehouse. 75
Figure 4.2 One strategy for identifying spaces for inserting dockets. 76
Figure 4.3 A second strategy for locating the correct gap between orders. 77
Figure 4.4 Extracts from the HTA of ultra-sonic testing of welds in the nuclear
industry. 78
Figure 4.5 Equipment used in the ultra-sonic testing task. 79
Figure 4.6 HTA of an underground railway control task. 82
Figure 4.7 The general functions of a neonatal intensive care team. 84
Figures xi
Figure 5.1 Three versions of the same hierarchy showing different layout
compromises. 90
Figure 5.2 Representation oj HTA over severalpages. 91
Figure 5.3 This shows both the manner in which goals not further redescribed
are underlined and illustrates the numbering system. 92
Figure 5.4 The numerical representation of the supermarket checkout task
from Figure 3.5 translated into a sequence for an HTA table. 94
Figure 5.5 This compares a flow diagram with a rule set. This example is
from the HTA described in Figure 3.5. 98
Figure 5.6 The outline of the supermarket task. 99
Figure 6.1 Changing a cartridge in a laser printer. 104
Figure 6.2 A typical arrangement of processing units in a process plant. 105
Figure 6.3 The top level of anHTA for a batch plant operation. 107
Figure 6.4 The manufacturing phase of the batch plant task analysis. 107
Figure 6.5 This extent of the HTA developed for the batch processing task. 108
Figure 6.6 Extracts from an HTA of a typical continuous process control task. 109
Figure 6.7 Redescription of dealing with off-specification conditions in a
continuous process control task. 110
Figure 6.8 The air-traffic control task. 112
Figure 6.9 The minimal access surgery task. 114
Figure 6.10 Detail from the minimal access surgery task dealing with a
number ofpsychomotor skills. 115
Figure 6.11 A telephone customer service task. 116
Figure 6.12 Preparing and printing a letter in a wordprocessor. 118
Figure 6.13 Modifying the order of words in the text. 118
Figure 6.14 Ways of developing text formatting. 119
Figure 6.15 Installing plant and pipework — illustration of a typical
mechanical maintenance task. 120
Figure 6.16 Representation of the general maintenance job 122
Figure 6.17 Analysis of overhaul valves in workshop which focuses on
maintenance of a specific type of equipment in a particular
domain. 123
xii Hierarchical Task Analysis
Figure 6.18 Carrying out nursing duties in a hospital ward. 125
Figure 6.19 The overall functions of the management task. 126
Figure 6.20 Setting up and modifying a department. 127
Figure 6.21 Activities in monitoring and maintaining the effectiveness of the
department. 129
Figure 6.22 Developing the department s systems. 130
Figure 6.23 HTA of nurse in charge of a ward — an example of staff
supervision. 131
Figure 6.24 Running the shift. 131
Figure 6.25 Liaising with other shifts. 132
Figure 7.1 The interaction between task factors. 138
Figure 7.2 Strategies for managing the operator s experience. 138
Figure 7.3 Layout of the batch plant. 144
Figure 7.4 Redescription of reflux . 144
Figure 7.5 HTA within an iterative human factors/human resource design
cycle. 155
Figure 8.1 A combined analysis of operating and maintaining the
packaging line. 159
Figure 8.2 The resultant task for the line operator. 160
Figure 8.3 The resultant task for the maintenance technician. 160
Figure 8.4 A proposed supervisory function for an automatic railway. 162
Figure 8.5 The principle of delegation. 163
Figure 8.6 A time-line showing how the analyst and task experts judge the
coincidence of tasks in a railway control task. 166
Figure 8.7 Timeline recording actual response of controllers. 167
Figure 8.8 Delegating to a colleague. 169
Figure 8.9 Delegating to a trainee. 169
Figure 8.10 Elements of shift handover. 171
Figure 8.11 Coaching and instructing. 172
Figures xiii
Figure 9.1 A hierarchical menu structure. 181
Figure 9.2 Flows of information, energy and product through plants. 182
Figure 9.3 The arrangement of intermediate product stores in the system. 183
Figure 9.4 Layout of control panels 184
Figure 9.5 Layout of computer control consoles. 184
Figure 9.6 HTA of a tele-sales task in a call centre. 194
Figure 9.7 A possible way of organising menus for the tele-sales task in
Figure 9.6. 196
Figure 10.1 An HTA of learning by experience. 199
Figure 10.2 HTA of a shop assistant s task. 201
Figure 10.3 Skills and knowledge mapped onto the task analysis. 203
Figure 10.4 Interaction between the instructional cycle and the learning
process. 206
Figure 10.5 Top level in the HTA of managing trains in a light rail depot. 210
Figure 10.6 Monitoring operations within the depot. 210
Figure 10.7 Some part-task training arrangements. 212
Figure 11.1 Preparing and developing a black and white film. 220
Figure 11.2 Two job-aids derived from the HTA in Figure 11.1. 220
Figure 11.3 A checklist derived from HTA. 221
Figure 11.4 A decision flow-chart derived from the plan in Figure 3.18. 222
Figure 11.5 The hierarchical aspects of a task description used to aid the
organisation of a manual. 224
Figure 11.6 HTA of manufacturing a specific product in a batch plant. 227
Figure 11.7 A batch manufacturing instruction for a single product. 228
Figure 11.8 A generic HTA for dealing with all products on the batch plant. 229
Figure 12.1 Outline job-description for a railway supervisory task. 237
Tables
Table 3.1 Clusterings of operations in the chlorine balancing task. 59
Table 3.2 Event table for the chlorine balancing task 63
Table 5.1 The main columns of the task analysis table. 95
Table 5.2 A simple tabular format showing the use of a notes column,
describing a range of human factors issues in a potentially
hazardous environment. 96
Table 5.3 Using columns in a task analysis table to allow the analyst to
systematically reord comments about operations according to
a given set of classifications. 96
Table 6.1 Table of sub-tasks to be analysed for the mechanical maintenance
project. 122
Table 7.1 Factors affecting performance and some consequences for their
combination. 150
Table 7.2 An example of an HTA table recording the factors affecting
performance as an aid to developing human factors hypotheses. 151
Table 7.3 Types of solution to support task performance and their relation
to the system design cycle. 154
Table 9.1 Typical information requirements for different operational types. 191
Table 9.2 Description of information types. 191
Table 10.1 The HTA table for the shopping task in Figure 10.2. 202
Table 10.2 Typical stages in a training design and development process. 207
Table 10.3 Summary of the main benefits of HTA in training design. 209
Table 12.1 Selection considerations in a health physics task. 236
xv
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| indexdate | 2024-07-09T18:50:20Z |
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| language | English |
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| spelling | Shepherd, Andrew Verfasser aut Hierarchical task analysis Andrew Shepherd 1. publ. London [u.a.] Taylor & Francis 2001 XIX, 270 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Analyse des tâches rasuqam Cognitiewetenschap gtt Ergonomie gtt Ergonomie rasuqam Science cognitive rasuqam Taakanalyse gtt Cognitive science Human engineering Task analysis Aufgabenanalyse (DE-588)4129549-3 gnd rswk-swf Aufgabenanalyse (DE-588)4129549-3 s DE-604 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009356545&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Shepherd, Andrew Hierarchical task analysis Analyse des tâches rasuqam Cognitiewetenschap gtt Ergonomie gtt Ergonomie rasuqam Science cognitive rasuqam Taakanalyse gtt Cognitive science Human engineering Task analysis Aufgabenanalyse (DE-588)4129549-3 gnd |
| subject_GND | (DE-588)4129549-3 |
| title | Hierarchical task analysis |
| title_auth | Hierarchical task analysis |
| title_exact_search | Hierarchical task analysis |
| title_full | Hierarchical task analysis Andrew Shepherd |
| title_fullStr | Hierarchical task analysis Andrew Shepherd |
| title_full_unstemmed | Hierarchical task analysis Andrew Shepherd |
| title_short | Hierarchical task analysis |
| title_sort | hierarchical task analysis |
| topic | Analyse des tâches rasuqam Cognitiewetenschap gtt Ergonomie gtt Ergonomie rasuqam Science cognitive rasuqam Taakanalyse gtt Cognitive science Human engineering Task analysis Aufgabenanalyse (DE-588)4129549-3 gnd |
| topic_facet | Analyse des tâches Cognitiewetenschap Ergonomie Science cognitive Taakanalyse Cognitive science Human engineering Task analysis Aufgabenanalyse |
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