green Bean shop green shop smart before HE
green. Bean shop green. shop smart before. HE. after. evaluation guides : : james landay. susumu harada team : : kevin. pallavi. justin. rick. blake
outline • • • green. Bean – what it does? before - heuristic evaluation - after study method results and discussions recommendations summary
green. Bean – what it does?
green. Bean – what it does? score scan preferences search
before – HE – after
before – HE -after no help! created contextual help evoked from MENU breadcrumbs – not clickable removed breadcrumbs – shallow nav
before – HE - after selection feedback not sufficient familiar selection schemes ADD is confusing ADD is visually separated allows selection of contradictory diets removed redundant categories and separated allergens from diet
before – HE -after not an intuitive orientation changed the orientation no feedback as to when the capture will happen Capture happens on pressing the circular switch No help ! Added quick help under screen and more in contextual help
before – HE - after no quick way to disable filter, you can turn ON/OFF filters without loosing them
before – HE- after rating on manufacture and travel missing IA reworked home icon confusing with device home Home icon changed to logo Compare in context menu, inconsistent menu items, hidden Menu options made consistent Compare -> search similar = search Direct content related stuff within app
before - HE - after page headings not consistent fixed logo – does not take to home logo – set to home through out
study method
study method • • • evaluate, identify breakdowns, inform design online user study friends who want help us improve green. Bean 20 mins, 15 completes demographics, tasks, qualitative feedback – success : evaluate changes, inform design – abandon: where breakdown occurred • 3 task given in random order
study method task 1 • Scenario: You want to find out your personal cumulative impact of your shopping choices to see how “green” you have been overall. You have already entered your Safeway loyalty card information so green. Bean can track what you have purchased over time. • Task: Check your green. Bean score and score breakdown. • Validation question: Please note the following: Which week in this month did you score the most "beans? "
study method task 2 • Scenario: You are allergic to peanuts and you need to find granola that will be safe to eat. • Task: First, use the “Preferences” section of green. Bean to identify peanuts as an allergen. Then use green. Bean search to find a safe Granola bar. • Validation question: Please note the following: Is Udi’s an allergy safe granola product?
study method task 3 • Scenario: You’re at the grocery store shopping and you need to get laundry detergent. You found Kirkland detergent but want to evaluate it against other detergents available in the store. • Task: Scan the product barcode to look up more details about Kirkland detergent. Lookup it’s Ratings. Compare it to other detergents to help you decide which kind to buy. • Validation questions: How many user reviews were there for the product? Which product has the lowest price/unit?
results and discussion
results and discussion participants age group of 20 -25. A tech savvy age group Android? Product search in store? compelled need 3. 7/5 towards being environmentally friendly. (1: Don’t care, 5: Strongly feel)
results and discussion task 1: check score lowest time to complete and the smallest failure rate have their score both visually and quantitatively mean time (success): 0. 46 mins interface helped me (success) : 4. 4/5 80% of them are confirmed “This was very simple and easy to navigate” “What exactly do the "beans" mean? “ “I thought it was kind of confusing that there was a "score" button… just took me back…” “bean” metaphor : confusing “<< Score” instead of “Score”
results and discussion task 2 : set allergy preference and search not familiar with the Android, 67% success, intuitive to find preferences: 3. 1/5 - ok, include on home as well mean time (success): 3. 08 mins long time: 2 stage task interface helped me (success) : 3/5 70% confirmed “… Also the check box that says apply filters is very ambiguous. ” improve ON/OFF filter presentation Where did you look for help? “In the screen that is prompted when you push the menu key. Next to the preferences button. ” Participants could find the contextual help in the Menu
results and discussion task 3 : scan and compare products scan new interaction Success only 60%, lower the mean time task is rated high for ease of use mean time (success): 1. 30 mins 4. 2/5 for the product information page interface helped me (success) : 3. 8/5 64% and 50% confirmed “… only problem that I had was with the buttons sorting because it was too small. ” “Fairly easy. Although it took me some time to find the "similar products" button” sort with tab did not suit the user mental model easy with hiccups with “Search similar”
recommendations
recommendations • home screen: – clean, well aligned list may be – expose important functions • score: – quantitative values also – “<< SCORE” instead of “SCORE”
recommendations • preferences: – make it visible on home as well, do not hide – Filter to be ON by default – Filter should indicate Allergens, • product Information: – search similar : give it a right place – ingredients to be listed as “list” not paragraph. – “sort by”: tabs not effective.
summary
Summary Overall • … logo is given more importance than the functionality. . . itself. It would have been great if all the buttons were lined up in order of usage (barcode, search, list, etc) one below the other. • The filter system was the most awkward part. • Ingredients should be a list and not a paragraph. • I didn’t like the hidden options and preferences. • The layout looks really professional, and the information obtained from searching was very • For the most, part it was easy to use. I like the buttons on the home screen. They are very clear. I • There is certainly a strong need for this kind of an application. complete and useful. Also the "check my score" feature is a good one- so people can see the overall effect they have having by choosing greener products. like the instructions below the bar code scan. They helped a lot.
thanks
- Slides: 27