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ResearchKit Release Notes

ResearchKit 1.2 Release Notes

ResearchKit 1.2 supports iOS and requires Xcode 7.0 or newer. The minimum supported Base SDK is 8.0.

In addition to general stability and performance improvements, ResearchKit 1.2 includes the following new features and enhancements.

  • New Active Tasks

  • Tower of Hanoi Task

    Contributed by coxy1989.

    The Tower of Hanoi task is frequently used in psychological research on problem solving.

    It is a mathematical puzzle consisting of three rods and a number of disks of different sizes which can slide onto any rod. The puzzle starts with the disks in a stack in ascending order of size on one rod (the smallest at the top).

    The objective of the puzzle is to move the entire stack to another rod, obeying the following rules:

    1. Only one disk can be moved at a time.
    2. Each move consists of taking the upper disk from one of the stacks and placing it on top of another stack.
    3. No disk may be placed on top of a smaller disk.

  • Paced Serial Addition Test Task

    Contributed by Julien Therier.

    The Paced Serial Addition Test task provides adaptations of both the Paced Auditory Serial Addition Test (PASAT) and the Paced Visual Serial Addition Test (PVSAT).

    The PASAT is a neuropsychological test used to assess capacity and rate of information processing and sustained and divided attention.

    Both tests are documented in the scientific literature (Fos et al., 2000; Nagels et al., 2005) as a measure of the Multiple Sclerosis Functional Score.

    This task generates a series of single digits (for example, 60 of them), at the specific frequency (for example, one new digit every 2 or 3 seconds). The user must add the newly presented digit to the one prior to it.

  • Timed Walk Task

    Contributed by Julien Therier.

    The Timed Walk task measures gait speed and is an adaptation of the Timed 25-Foot Walk in the context of multiple sclerosis.

    Gait speed has been demonstrated to be a useful and reliable functional measure of walking ability. When administering the Timed Walk Task, patients are allowed to use assistive devices (canes, crutches, walkers).

  • Charts Module

Contributed by coxy1989 and Ricardo Sánchez-Sáez.

A Charts module has been implemented. It features three chart types: a pie chart (ORKPieChartView), a line graph chart (ORKLineGraphChartView), and a discrete graph chart (ORKDiscreteGraphChartView).

The views in the Charts module can be used independently of the rest of ResearchKit. It doesn't automatically connect with any other ResearchKit module: the developer has to supply the data to be displayed through the views' dataSources, which allows for maximum flexibility.

  • Other Improvements

  • Scale Answer Format

    Contributed by Apple Inc.

    Discrete scales now support text choice labels, and all scales support images in place of the minimum and maximum range labels.

  • Result Predicates

    Contributed by Ricardo Sánchez-Sáez.

    The predicate-building methods in ORKResultPredicate now use the new ORKResultSelector class for unequivocally identifying a question step result or a form item result.

    This eliminates ambiguity when matching results with the same inner scope identifier. For example, a form item result can have the same identifier as a question step result or as another form item result in a different form step, and you can now match them separately.

ResearchKit 1.1 Release Notes

ResearchKit 1.1 supports iOS and requires Xcode 6.3 or newer. The minimum supported Base SDK is 8.0.

In addition to general stability and performance improvements, ResearchKit 1.1 includes the following new features and enhancements.

  • Navigable Ordered Task

Contributed by Ricardo Sánchez-Sáez.

A new type of conditional ordered task (ORKNavigableOrderedTask) has been implemented.

The developer can use the ORKStepNavigationRule subclasses to dynamically navigate between the task steps:

  • ORKPredicateStepNavigationRule allows to make conditional jumps by matching previous results (either those of the the ongoing task, or those of any previously stored task result tree). You typically use the class methods in the ORKResultPredicate class to match answers in the most commonly used result types.

  • ORKDirectStepNavigationRule provides support for unconditional jumps.

  • New Active Tasks

  • Reaction Time Task

    Contributed by coxy1989.

    The Reaction Time Task is an adaptation of the Simple Reaction Time test (SRT). SRT measures reaction time through delivery of a known stimulus to a known location to elicit a known response.

    This test is deployed in a range of research questions across fields including medicine, sports science and psychology.

    Although it classically involves pressing the space bar or clicking a mouse in response to an event on screen, the ResearchKit implementation relies on the study participant shaking the device when she sees a blue circle on the screen, which we think is more correlatable to a true stimulus reaction test.

  • Tone Audiometry Task

    Contributed by Vincent Tourraine.

    The Tone Audiometry Task is an adaptation of the Pure Tone Audiometry test (PTA). PTA is a key hearing test used to identify hearing threshold levels of an individual, enabling determination of the degree, type and configuration of a hearing loss.

    The ResearchKit implementation generates a series of pure sinusoid sounds, with different frequencies and on different channels (left or right). The test starts at the minimum volume and is gradually increased until the participant perceives it and taps a button. At that time, the current sound amplitude, frequency and channel are recorded.

  • Scale Answer Format Enhancements

Contributed by Ricardo Sánchez-Sáez and Bruce Duncan.

Support for discrete and continuous vertical scales has been added. Some questions, like mood measurement or symptom severity measurement queries may be more naturally presented using a vertical scale.

The Scale Answer Format has also been improved by making it usable within forms.

  • Image Capture Step

Contributed by Bruce Duncan.

An Image Capture Step has been added. The researcher can ask the participant to take pictures of relevant body parts. The researcher can provide a body part image template to facilitate the scale and orientation of the taken pictures.

  • iPad Support

Contributed by Ricardo Sánchez-Sáez and Apple Inc.

iPad support for all orientations has been implemented.