Overview of the core behavioral tasks for LEVANTE. This repo contains details and implementations (under construction) for each of these tasks, as well as the reasoning behind adaptations we make in order to shorten or adjust the difficulty to avoid ceiling/floor effects.

Collating item banks for all tasks here.

Running Locally

For local testing during development:

# the task-launcher directory contains the task apps
cd task-launcher

# install dependencies
npm install

# run the development server
npm run dev

Task details:

1. Matrix Reasoning [George]

   • piloting 60 novel items from Rogier Kievit and Nicholas Judd

2. Hearts & Flowers [EF: Inhibition] [George]

   • 3.5 is the youngest you can go
   • practice trials: 6 hearts, 6 flowers, 6 mixed (1500ms + 500 ISI)
   • test trials: 8 hearts, 12 flowers, 12 mixed (1500ms), 12 mixed (1250ms)
   • 6+6+6+8+12+12+12 = 62 trials * 2s/trial = 2min — can’t save a lot of time in the task! 30s instruction?

3. Corsi Block [EF: WM] [George]

   • age-appropriate grid size could be set
   • for ages < 5, only do the forward block (backward is too hard)

4. Same-Different-Selection [EF: Cognitive Flexibility]

   • progressive task designed by AMES lab (Jelena Obradovic and Michael Sulik) combining types of trials from the FIST and Something's-the-Same tasks to cover the full age range
   • task mock-up here
   • Original StS (Willoughby 2012) was 16 trials

5. TROG [Language: Grammar]

   • Test for Reception of Grammar (Bishop, 1982)
   • "multiple-choice test where the child listens to a spoken sentence and must select one of four pictures to match what is heard. Items are organised into 20 blocks of 4 items each, with the grammatical complexity of the blocks increasing as the test progresses"
   • there's a vocab recognition test for some of the words used in the TROG that we may want to skip (or include in vocab tests?)

6. Theory-of-Mind, Emotional Reasoning, and Hostile Attribution Battery [SocialCog: Theory of Mind, Emotion Reasoning] [Rebecca]

   • modified narratives and questions here
   • food, snack, and dog content needs to be adapted -- illustrator is working on new illustrations

7. Math: EGMA + Multiplication + 4AFC Number Line [Math: Symbolic Math] [Rebecca]

   • Number Identification (say the number) - (60 s; 20 items total; stop if [1] child stops on an item for 5 seconds) VERBAL
   • Number Comparison (which is bigger?) - (2 practice, 10 items; stop if child makes 4 successive errors)
   • Missing number (sequence) - (2 practice, 10 items)
   • Addition (level 1) - (20 items, 60 s; stop if [1])
   • Addition (level 2) - (5 items; stop if no correct answers on level 1, or [1])
   • Subtraction (level 1) - (20 items, 60 s; stop if [1])
   • Subtraction (level 2) - (5 items; stop if no correct answers on level 1, or [1])
   • multiplication (not part of EGMA, but add for oldest kids to avoid ceiling?)
   • word problems (nix due to overlap with language?) - (2 practice, 6 items)
   • total time: at least 5 minutes
   • total of 94 items (non-word problems)

8. Number Line Estimation Task [Math: Approximate Math] (ask Daniel Ansari?)

   • how many number lines (age-based?) and problems? (0-10, 0-100, 0-1000?)
   • e.g. one study used 28 stim: “The materials included a 15-cm line with one end marked with 0 and the other end marked with 100 (i.e., min = 0, max = 100) and 28 numbers: 3, 4, 6, 8, 12, 14, 17, 18, 20, 21, 24, 25, 29, 33, 39, 42, 48, 50, 52, 57, 61, 64, 72, 79, 81, 84, 90, and 96. The number 20 and 50 were used for practice.”
   • propose to make fully adaptive, with age-based starting point
   • whole number only, or consider adding fraction number lines?
   • Daniel Ansari and Bob Siegler recommend using number-to-position (i.e., given a number, indicate position on number line) rather than position-to-number -- ideally, let's pilot both with school-aged children

9. Mental Rotation [Visual-Spatial] [George/Rebecca]

   • 2AFC match-to-sample task
   • item bank combining goat, ghost, and Shepard-Metzler 3D blocks stimuli rotated 0, 30, 60, 90, 120, 150, or 180 degrees (120 items, nonadaptive)
   • propose to make fully adaptive:
   • ToDo: animated familiarization trial showing how target item rotates and matches to a response option
   • 11/30/2023: added Shepard & Metzler stimuli from Mike (created by Talia Konkle?), which are black outlines on a white background.

10. Child Survey Questions [Amy & Bobby]

    • trying to standardize a 5-point positive/negative valence scale (emoji-based?)
    • questions are here, but not yet finalized

11. ROAR Vocab [Language: Vocab] [Bria]

    • full version is 10 min; adaptive version should be 3 min

External tasks: - MEFS (MN Executive Function Scale) [EF] - ROAR Single Word Reading [Language: Single-word Reading] - external? - ROAR Sentence Comprehension [Language: Reading Comprehension] - external? - Expressive Vocab (ROAR?)