Observing users Chapter 12. Observation ● Why? Get information on.. – Context, technology, interaction ● Where? – Controlled environments – In the field.

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Presentation transcript:

Observing users Chapter 12

Observation ● Why? Get information on.. – Context, technology, interaction ● Where? – Controlled environments – In the field (where the product is used) ● Observer: – outsider – participant – ethnographers

Frameworks to guide observation ● - The person. Who? - The place. Where? - The thing. What? ● The Goetz and LeCompte (1984) framework: - Who is present? - What is their role? - What is happening? - When does the activity occur? - Where is it happening? - Why is it happening? - How is the activity organized? ● Checklist can also help (p. 369).

Data collection ● Notes: – not technical, writing speed may be a factor, hard to observe and write at the same time, laptop is faster but intrusive and cumbersome, two people work better than one. ● Still camera: – images are easily collected, allows evaluators to be mobile.

Data collection cont. ● Audio: – less intrusive than video, allows evaluators to be mobile, inexpensive, lack of visual records, hard to transcribe data. ● Video: – both visual and audio data, can be intrusive, can be inexpensive with small cameras, can allow evaluators to be mobile, attention is focused on what is seen through the lens, analysis can be time consuming.

Data collection cont. ● Interaction logging (transcripts & replay): – logs everything you do in the system, easy to generate detailed analysis, transparent to the user, facial expression etc. is not logged. – CS111 example using GREWP tool. ● Techniques may be used individually or combined => requires coordination.

Data analysis  Qualitative data - interpreted & used to tell the ‘story’ about what was observed.  Qualitative data - categorized using techniques such as content analysis.  Quantitative data - collected from interaction & video logs. Presented as values, tables, charts, graphs and treated statistically.

CS111 Experiment ● Create a presentation of a world country and its culture. ● GREWP tool provides users with: – a shared workspace online, – chat to communicate, – public and private browsers – Generates transcripts for replay

Observing the users ● Where was the study performed: – Controlled environment ● We had everything set up before participants arrived ● Tested the software ● etc. ● Data collection: – Note taking: Important issues noted on paper and coordinated with transcripts later. – Replayed transcripts that the tool generated.

Analyzing the data ● Coordinated notes with transcripts ● Replayed the transcripts – Qualitative data (Categorization) ● Looking for incidents or patterns. ● How was a certain task completed? ● How did the users use a certain component in the system? ● One user frequently got stuck in the HTML coding. Why is that? ● Analyzing the discourse (Alex Feinman)

Analyzing data

Redesign user2: look where I'm in the screen user2: title is only in the head user2: not in the normal text user2: look how I to a table user2: you only put title only in the head ● Proposal 1: ● Automatically add reference to a line in the code window to the chat. ● Help users stay coordinated

Redesign user2: how is the work? user2: how far is your table?? user1: where are you now? user1: are you finished with the food? ● Proposal 2: ● Provide a way to write down a plan and review or modify it visually. ● Helps users be aware of each others work. ● Automatic update of the plan as work progresses.