Evaluating Your Prototype without Users Class 29 Agenda 3 00 3 20 Evaluating without Users 3 20 3 50 Evaluate your prototypes Overview of Evaluation Methods With users Without users With tasks Cognitive Walkthrough Without tasks Heuristic Evaluation Inspection Methods Think Alouds Wizard of Oz Alpha Beta Testing Inspection Methods Use inspection methods before conducting a user study with participants You are the analyst where you are trying to put yourself in the users shoes What are the implications of this statement Inspection Method Issues Challenges with inspection methods Relationship between inspection methods and usability studies Inspection Method Skills Analytic technique and you are the analyst Like code inspections but at the design level Discuss code inspection goals process and motivations Performed individually or in a group Tasks and scenarios guide interactions with mock up Structured techniques for systematically Analyzing designs Recording problems Prioritizing problems Cognitive Walkthroughs Motivation Walk up and use Interfaces What Sequence of actions a user will do to conduct a task critique of likelihood to do the intended action Who Individual or a group When Before coding after some fidelity prototype What Task Idea of who the user is Cognitive Walkthrough Checklist How to Do a Cognitive Walkthrough Generate the list of steps Why do this prior Happy paths Do the walkthrough Write up the walkthrough summary Doing the Walkthrough Go through your list of actions step by step and be realistically critical about the credibility of the user taking this action Review the walkthrough checklist Do not exclude other issues that come to mind examples Describe WHY the step is problematic do not just use my handy labels Keep moving Do not start redesigning in the middle of the walkthrough CW Checklist Match to Intent Will users be trying to produce whatever effect the action has Does the required action match the user s intentions Do users have the required knowledge Visibility Will users see the control menu button switch for the action Labeling Once users find the control will they recognize that it produces the effect they want Indication of Progress After the action is taken will users understand the feedback they get so they can go on to the next action with confidence Doing the Walkthrough Summary Analyze your findings to produce a report Outlining possible problem spots Why is this a problem What are possible design solutions Prioritizing the problems found by severity Must fix desirable to fix nice addition Provide some reason as to why a problem is severe or not Do a Walkthrough Together Task Katie wants to lose weight after the birth of her child She has heard a lot about the Atkins diet and know people have had success with it She wants to learn more about the deit and if it is a healthy way to lose weight She saw a commercial for WebMD com and figured that would be the best source because they must work with MDs to have that name Mini Persona Katie uses the web on a daily basis as part of her work and is comfortable navigating through most web sites She has almost no knowledge about weight loss or nutrition She is relying completely on the WebMD com website to find out all the information she needs Cognitive Walkthrough WebMD com 1 Enter URL www webmd com 2 Click on Women s Health 3 Click on Diet and Weight Loss 4 Click on Evaluating the Latest Diets 5 Click on Atkins Diet 6 Read text Cognitive Walkthrough WebMD com 1 Enter URL www webmd com Match to Intent Visibility Labeling Indication of Progress 2 Click on Women s Health Match to Intent Visibility Labeling Indication of Progress 3 Click on Diet and Weight Loss Match to Intent Visibility Labeling Indication of Progress 4 Click on Evaluating the Latest Diets Match to Intent Visibility Labeling Indication of Progress 5 Click on Atkins Diet Match to Intent Visibility Labeling Indication of Progress 6 Read text Match to Intent Visibility Labeling Indication of Progress Cognitive Walkthrough Issues How to write them up Strengths and limitations of this method CW On Your Prototype Conduct a CW on your prototype From Monday s class Write a summary for your update report Looking forward Update reports due Friday