2.1
● Identify a task
○ tips on identify a task
○
● make a useful and usable interface
● three roles that humans can play in the HCI system.
●
○ processor:
■ can’t see the inside of their head
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HCI notes for computer science, Schemes and Mind Maps of Computer Communication Systems
HCI notes for computer science
Typology: Schemes and Mind Maps
2024/2025
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● Identify a task ○ tips on identify a task
● make a useful and usable interface ● three roles that humans can play in the HCI system.
○ processor: ■ can’t see the inside of their head
■ fit within human physical limits ■ quantitative experiments. ■ John B Watson. Behaviorism, focuses only on observable behavior, not on introspection, without cognition and don’t ask why. ○ predictor ■ get into their head ■ fit with knowledge ■ qualitative studies - ex situ studies ■ cognitivism ○ participant ■ what’s going on in their head + what’s going on around them ■ fit with the context ■ in situ studies( with the real complet context) ■ functionalism / systems psychology, human behavior with a complex system ○ individual – group – society
Design life cycle 3.1 method ● user-centered design - six principles ○ users&task&environment ○ users are involved throught design and development ○ user-centered evaluation ○ undergo constant iteration and improvement process ○ address whole entire experience ○ design team diversity ● stakeholders ○ Primary : who use the interface ○ Secondary: don’t use directly, but interact with the output ○ Tertiary : never interact but impacted by the tool ● The design life cycle ○ needfinding ○ develop design alternatives ○ prototyping ○ evaluation ● gathering data ○ quantitative data : describe anything numeric , provide “what” ■ nominal, instances of different categories ● single nominal/multi-nominal ● Binary/Non-binary ■ ordinal, categories with ordering(small to big ● Binary/Non-binary ■ interval, no zero ● diceret/continuous ■ Ratio ● diceret/continuous ○ qualitative: provide “how/why”,stronger, provide a much richer picture , larger span, cost more, prone to interpretation biases ■ transcripts ■ field notes ■ airtifacts ○ convert qualitative into quantitative - coding
3.2 Research Ethics
● The value of research ethics - IRB ● IRB protocols ○ study description ○ research personnel ○ recruitment procedures ○ consent procedures ○ study procedures ○ data retention procedures
3.3 Needfinding and Requirements Gathering ● needfinding ○ the problem space: broder ○ the full range of people ○ 5 tips on avoiding biases ■ confirmation biases ■ observer biases ■ social biases ■ voluntary response bias ■ recall biases ○ naturalistic observation : observe people in their natural context ■ take notes ■ start specific and then abstract ■ spread out sessions ■ find partners ■ look for questions ○ participant obeservation :experience tasks ourselves ○ interviews ○ think-aloud post-event protocol ○ survey