470 likes | 602 Views
26 th Annual Management Information Systems (MIS ) Conference February 14, 2013. National Assessment of Educational Progress (NAEP) Observable Data From Computer-Based Assessments Gregory Anderson, Ph.D. Senior Usability Expert Fulcrum IT, LLC. Outline. What are observable data?
E N D
26th Annual Management Information Systems (MIS) ConferenceFebruary 14, 2013 National Assessment of Educational Progress (NAEP) Observable Data From Computer-Based Assessments Gregory Anderson, Ph.D. Senior Usability Expert Fulcrum IT, LLC
Outline • What are observable data? • What can we observe in the data? • How have we used what we’ve observed? • How can we observe more?
Outline • What are observable data? • What can we observe in the data? • How have we used what we’ve observed? • How can we observe more?
What are Observable Data? • Computer actions recorded into a database • Possible with Computer-Based Assessments (CBA) • Automatic recording of low level information • Initially • Number of key presses • Number of word processing functions (cut, copy, etc.) • Button clicks (Next, Back, etc.) • Screen coordinates (mouse click) • Recently added: • Time stamping • Extended data (keys pressed, etc.)
What are Observable Data? 31 Reach End of Tutorial 32 Backspace 33 Delete 34 Clear Answer 35 Mouse Cut 36 Menu Cut 37 Mouse Copy 38 Menu Copy 39 Mouse Paste 40 Menu Paste 41 Mouse Bold 42 Keyboard Bold 43 Menu Bold 44 Right Click Bold 45 Mouse Italic 46 Keyboard Italic 47 Menu Italic 48 Right Click Italic 49 Mouse Underscore 50 Keyboard Underscore 51 Menu Underscore 52 Right Click Underscore 53 Mouse Indent 54 Mouse Outdent 55 Mouse SpellCheck 56 Menu SpellCheck 57 Mouse Misspellings 58 Misspellings Identified 59 Misspellings Corrected 60 Menu Thesaurus 61 Right Click Thesaurus 62 Thesaurus Replacement 63 Item Scroll 64 Response Scroll 65 Stimulus Scroll CBA2011 (Math Computer Based Study MCBS Grade 8 – Adaptive) 1 Enter Item 2 Exit Item 3 Change Volume 4 Change Language 5 Keypress Count 6 Click Choice 7 Click Progress Navigator 8 Keyboard Cut 9 Right Click Cut 10 Keyboard Copy 11 Right Click Copy 12 Keyboard Paste 13 Right Click Paste 15 Text-To-Speech 17 Collapse Prompt 18 Expand Prompt 19 Collapse Response 20 Expand Response 21 Zoom 22 Admin Move-To-Next-Block 23 Hide Timer 24 Show Timer 25 Change Skin 26 Application Recovery 28 Swap Mouse Button 29 Play 30 Pause
What are Observable Data? 91 Enter Student Control Panel 92 Leave Student Control Panel 93 Menu Indent 94 Menu Outdent TEL2012 (2012 TEL Tryout Grade 8) 95 Close Word Definition CBA2013 (2013 TEL Pilot Grade 8) 96 Reset Booklet 97 Next 98 Back 99 Yes 100 No 101 OK 102 Media Interaction CBA2012 (2012 WCBA Pilot Grade 4) 66 Drop Choice 67 Keypress 68 Highlight Mode On 69 Highlight Mode Off 70 Highlight Text 71 UnHighlight Text 72 Eliminate Mode On 73 Eliminate Mode Off 74 Eliminate Choice 75 UnEliminate Choice 76 Mouse Select All 77 Keyboard Select All 78 Menu Select All 79 Mouse Undo 80 Keyboard Undo 81 Menu Undo 82 Mouse Redo 83 Keyboard Redo 84 Menu Redo 85 Right Click SpellCheck 86 Mouse Thesaurus 87 Click Word Definition 88 Display Reminder 89 Pause Workstation 90 Resume Workstation
Observable Data Sources • 2011 Writing Computer-Based Assessment Pilot • Grade 8: 24,281 Students • Grade 12: 28,238 Students • 2011 Math Computer-Based Study • Grade 8: 8,427 Students • 2012 Writing Computer-Based Assessment • Grade 4: 13,005 Students
Outline • What are observable data? • What can we observe in the data? • How have we used what we’ve observed? • How can we observe more?
What Can We Observe? Easy • Frequency/Proportion (event ID, booklet ID, total number of participants) • End State (event ID, booklet ID, order of events) • Time Course (event ID, time stamp) • Duration/Intervals (event ID, 2 time stamps, math) • Qualitative (event ID, extended data) • Big Picture Qualitative (all data, other data sources) Difficult
What Can We Observe? Easy • Frequency/Proportion (event ID, booklet ID, total number of participants) • End State (event ID, booklet ID, order of events) • Time Course (event ID, time stamp) • Duration / Intervals (event ID, 2 time stamps, math) • Qualitative (event ID, extended data) • Big Picture Qualitative (all data, other data sources) Difficult
Observing Frequency/Proportion How many times did the student use the mouse to cut? How many times did the student use the [CTRL+X] cut keystroke combination? How many times did the student use the menu to cut? How many times did the student cut using the right-click context menu? How many times did the student use the mouse to copy? How many times did the student use the [CTRL+C] copy keystroke combination? How many times did the student use the menu to copy? How many times did the student copy using the right-click context menu? How many times did the student use the mouse to paste? How many times did the student use the [CTRL+V] paste keystroke combination? How many times did the student use the menu to paste? How many times did the student paste using the right-click context menu? How many times did the student use the mouse to click the bold button? How many times did the student use the [CTRL+B] bold keystroke combination? How many times did the student use the menu to boldface? How many times did the student boldface using the right-click context menu? How many times did the student use the mouse to click the italicize button? How many times did the student use the [CTRL+I] italic keystroke combination? How many times did the student use the menu to italicize? How many times did the student italicize using the right-click context menu? How many times did the student use the mouse to click the underline/underscore button? How many times did the student use the [CTRL+U] underline/underscore keystroke combination? How many times did the student use the menu to underline/underscore? How many times did the student underline/underscore using the right-click context menu? How many times did the student use the mouse to click the spell check button? How many times did the student use the menu to check spelling? How many times did the student check spelling using the right-click context menu? How many times did the student right-mouse click misspelled words? How many times did the spell check identify misspellings?
Observing Frequency/Proportion Available: WCBA 2010
Observing Frequency/Proportion What Proportion Told Us What Proportion Doesn’t Tell Us Which students used multiple tools If tools were used in some sections more than others When and for how long each tool was used The impact of tool use on performance Exploration vs. need • All tools were triggered at least once by a higher percentage of 8th graders than 12thgraders • Text-to-Speech and scrolling were used by a greater percentage of students than other system tools • Help was used by a smaller proportion of students than other system tools
What Can We Observe? Easy • Frequency/Proportion (event ID, booklet ID, total number of participants) • End State (event ID, booklet ID, order of events) • Time Course (event ID, time stamp) • Duration/Intervals (event ID, 2 time stamps, math) • Qualitative (event ID, extended data) • Big Picture Qualitative (all data, other data sources) Difficult
Observing End State Available: WCBA 2010 Grade 8 Blue–72% High Contrast–21% Gray–7%
Observing End State What End State Told Us What End State Doesn’t Tell Us When they changed to the final state (beginning? end?) How long they spent in the end state Why they changed How many blue users surveyed the other skins first (i.e., kept the default vs. choosing it) • Blue was the end state skin for 72% of participants • Grey was the least used (7%)
What Can We Observe? Easy • Frequency/Proportion (event ID, booklet ID, total number of participants) • End State (event ID, booklet ID, order of events) • Time Course (event ID, time stamp) • Duration/Intervals (event ID, 2 time stamps, math) • Qualitative (event ID, extended data) • Big Picture Qualitative (all data, other data sources) Difficult
Available: MCBA 2011 Observing Time Course Booklet #6037
Observing Time Course What Time Course Told Us What Time Course Doesn’t Tell Us Which words were misspelled Number of words that were not identified as misspelled If spellcheck was used to good effect What was happening in between spellcheck events • When Corrected Misspelling events occurred • How long between Corrected Misspelling events
What Can We Observe? Easy • Frequency/Proportion (event ID, booklet ID, total number of participants) • End State (event ID, booklet ID, order of events) • Time Course (event ID, time stamp) • Duration/Intervals (event ID, 2 time stamps, math) • Qualitative (event ID, extended data) • Big Picture Qualitative (all data, other data sources) Difficult
Duration(2 time stamps, math) Observing Duration/Intervals
Duration(2 time stamps, math) Observing Duration/Intervals • YOU ARE PERMITTED TO USE A CALCULATOR IN THIS SECTION. • This section has 16 questions. Respond to questions on the computer. You will have to select an answer or type your response as directed. In those questions where you type an answer, it is important that your answer be clear and complete since partial credit may be awarded. • Remember: • You are permitted to use a calculator in this section; either your own, or the one provided by NAEP. If you need help using the one provided by NAEP, read the instructions on the back of the scratch paper or look at the quick reference card on the calculator lid. • If the calculator does not work or you do not know how to use it, raise your hand and ask for help. • You will have to decide when to use the calculator. For some questions using the calculator is helpful, and may even be necessary. However, for other questions the calculator may not be helpful. • This section is 25 minutes. If you finish before time is up, you may review any question within this section. You will not be able to go to the next section until 25 minutes are up. • You may use the scratch paper provided, but be sure to enter all of your responses on the computer. • Click NEXT to continue.
Duration(2 time stamps, math) Observing Duration/Intervals • YOU ARE NOT PERMITTED TO USE A CALCULATOR IN THIS SECTION. • This section has 16 questions. Respond to questions on the computer. You will have to select an answer or type your response as directed. In those questions where you type an answer, it is important that your answer be clear and complete since partial credit may be awarded. • Remember: • You are NOT permitted to use a calculator in this section. • This section is 25 minutes. If you finish before time is up, you may review any question within this section. You will not be able to go to the next section until 25 minutes are up. • You may use the scratch paper provided, but be sure to enter all of your responses on the computer. • Click NEXT to continue.
Observing Duration/Intervals What Duration Tells Us What Duration Doesn’t Tell Us What students were doing while on that page How much of the directions they read How well they understood the directions • Students spent from 15-20 seconds on the directions for different blocks • Students on average spent more time on the directions for VE521278c16 • Senior Usability Experts are really slow readers!
What Can We Observe? • Frequency/Proportion (event ID, booklet ID, total number of participants) • End State (event ID, booklet ID, order of events) • Time Course (event ID, time stamp) • Duration/Intervals (event ID, 2 time stamps, math) • Qualitative (event ID, extended data) • Big Picture Qualitative (all data, other data sources) Easy Difficult
Observing Qualitative Information • Spelling Examples (includes punctuation) • “befor” vs. “before” • “ninjas” vs. “ninja’s” • Spacing Examples • “monkey.You” vs. “monkey. You” • “books,none” vs. “books, none” • No Correction Examples • “stonger,faster,and” (no alternate spelling suggested) • “orrhjrejfjhhrhgjshjdnewjmfnffjnendndsmsandbfnnwnnfgbnemsnfcnfnsehgfnbsjehdnbvfndbfjxdnnebndfnfbfbfbbdbdnbsnsnnnsnsnsnnssnsnnsnnsnssssssssdjejkwjennbrbbfbbfbfcbfcbcvbbcxbcxblolooooooooooooooooooooooobbxbbx” Identified Error Types
Observing Qualitative Information What Qualitative Told Us What It Didn’t Tell Us The impact of the modification on the final output Re-creation of the final product • What was modified • How it was modified • When it was modified
Outline • What are observable data? • What can we observe in the data? • How have we used what we’ve observed? • How can we observe more?
Major Takeaways • Students used accommodations and system and WP tools substantially during CBAs. • Scrolling: 60%-70% • Text-to-Speech: 53%-72%
Major Takeaways • Some accommodations and tools were not used as might be expected • Accommodation – Directions written in Spanish • Used by - 55%-56% of eligible students
Major Takeaways Observable data helped to identify and validate usability issues with CBAs. • Misuse of Next button • To open writing panel • To check on time remaining • Pausing tutorials (only 8%-9% of pausers didn’t finish) • Scrolling was not used by 7%-14% of participants on items where it was necessary in order to show all the information.
Major Takeaways • Insight into student response patterns • Number of words used for different writing purposes
Major Takeaways • Insight into student response patterns • Types of errors identified by spell check
Major Takeaways • Insight into student response patterns • Distribution of spellcheck corrections by student
Major Takeaways • Insight into student response patterns • Compare silent reading rates
Major Takeaways With Calculator Without Calculator YOU ARE NOT PERMITTED TO USE A CALCULATOR IN THIS SECTION. This section has 16 questions. Respond to questions on the computer. You will have to select an answer or type your response as directed. In those questions where you type an answer, it is important that your answer be clear and complete since partial credit may be awarded. Remember: You are NOT permitted to use a calculator in this section. This section is 25 minutes. If you finish before time is up, you may review any question within this section. You will not be able to go to the next section until 25 minutes are up. You may use the scratch paper provided, but be sure to enter all of your responses on the computer. Click NEXT to continue. • YOU ARE PERMITTED TO USE A CALCULATOR IN THIS SECTION. • This section has 16 questions. Respond to questions on the computer. You will have to select an answer or type your response as directed. In those questions where you type an answer, it is important that your answer be clear and complete since partial credit may be awarded. • Remember: • You are permitted to use a calculator in this section; either your own, or the one provided by NAEP. If you need help using the one provided by NAEP, read the instructions on the back of the scratch paper or look at the quick reference card on the calculator lid. • If the calculator does not work or you do not know how to use it, raise your hand and ask for help. • You will have to decide when to use the calculator. For some questions using the calculator is helpful, and may even be necessary. However, for other questions the calculator may not be helpful. • This section is 25 minutes. If you finish before time is up, you may review any question within this section. You will not be able to go to the next section until 25 minutes are up. • You may use the scratch paper provided, but be sure to enter all of your responses on the computer. • Click NEXT to continue.
Written Instructions? • Written instructions are not being read for comprehension • Possible Causes / Consequences • The students suffered for not having read the instructions • The students didn’t need the instructions • Some students didn’t need the instructions and skewed the average duration data
What Do We Know? • How students use system tools • How students use word processing tools • What keys they are pressing and when • What buttons they are clicking and when • What words are identified by spell check, which are corrected and how they are corrected • How much time students spend on each screen
Outline • What are observable data? • What can we observe in the data? • How have we used what we’ve observed? • How can we observe more?
Descriptive vs. Experimental • Observable Data are by definition descriptive • Don’t answer causation or other complex questions • Causation needs experimental data • Isolate variables • Manipulate conditions • Compare groups • Complex questions • Pair Observable Data with other information
The More You Know, The Less You Know • Simple Question: Can Students Access the Features of CBA? • Simple Answer: Yes • Complex Questions • Did the changes made to interface have any impact on their performance or comfort during assessment? • Did everyone who would have benefited use them? • Do kids even know what benefits them? • What is impact of age/grade on beneficial impact of interface changes?
More Questions • Why do some students not use system tools? • Why do some students not use word processing tools? • Which tools result in better performance? • Are there other tools that might prove beneficial? • Do written instructions help? Everyone?
Better Questions = Better Answers • Start with questions to be answered • Determine sources of information necessary to answer question (research design) • Obs. Data (OD) + Usability testing • OD + Background Question Answers • OD + Performance Scores • OD + Qualitative Analyses • Interpret interactions among data
Data Sources • Observable Data (behavior) • Easy to collect (now) • Every participant (not just a sample) • Many, many parameters (many, many) • Single source • Profile Data (outcomes, background) • Also easy to collect on every participant • Fewer parameters • Multiple sources • Qualitative Data (impact, usability) • Requires interpretation • Difficult to collect • Requires sampling (research design)
Data: The Final Frontier Level III – Meaning Multiple variables Interactions among variables Qualitative information Level II – Structure Extended information Time course / Duration Value Level I – Counting Single variable Frequency /Proportion Value
Fulcrum IT Services, LLC National Assessment of Educational Progress (NAEP) Observable Data From Computer-Based Assessments Gregory Anderson, Ph.D. Senior Usability Expert Fulcrum IT, LLC