Following the Sound of Music

The Digits-in-Noise (DIN) test presents trials of three sequential spoken digits against a broad-band, speech-shaped masker. Signal/noise ratio is varied adaptively to track 50% correct. The dependent variable is the threshold noise tolerance in dB. Lower scores indicate better performance.

Tests the ability to distinguish speech from competing speech. Collocated condition uses target and two competing maskers all located directly in front of the listener, and spatially separated condition uses two masking sentences sent from 45 degrees to the left and right of center. Sentences are correctly identified as part of a series of test trials in which TMR progressively reduced every two trials. The dependent variable is the threshold target-to-masker ratio (TMR) as estimated based on the number of sentences correctly identified. Lower scores indicate better performance.

The DSI test simultaneously presents two nonsense sentences, one to each ear. Participants indicate two sentences heard from a list of alternatives. DSI sentences are presented at a comfortable listening level, usually 50 dB above pure-tone average of each ear. The dependent variable is the percentage of sentences correctly identified. Higher scores indicate better performance.

Survey that assesses the perceived level of hearing ability under different environmental or social situations, and participants also self-report ear surgeries or known ear pathologies. The dependent variable is total score (summed). Higher scores indicate greater perceived handicap.

SRT stimuli from the Coordinate Response Measure are sentences that participants hear that contain a color and number (e.g., "Ready Charlie, go to blue three now"). Participants select one of 36 colored/numbered squares that matches the color-number combination of the sentence. The dependent variable is the threshold target-to-masker ratio (TMR) as estimated based on the number of sentences correctly identified as part of a series of 20 test trials in which TMR progressively reduced every two trials. Lower scores indicate better performance.

Temporal sensitivity to silent gaps between pairs of brief (4 ms) bandlimited stimuli. The gap duration will start at 6 ms, and be reduced from there using a staircase procedure. The dependent variable is the threshold (in ms) at which participants stop responding accurately. Lower scores indicate better performance.

Stimuli are either unmodulated or are spectrotemporally modulated in amplitude using two cycles/octave for the spectral modulation and 4 Hz for the temporal modulation. Modulation depth in decibels (dB) will be adaptively varied to estimate threshold. The dependent variable is the threshold (in dB) at which participants stop responding accurately. Lower scores indicate better performance.

The stimulus is a pure tone that is modulated sinusoidally and varies at a rate of 2 Hz. The task is to detect differences between modulated and unmodulated tones, and the modulated "depth" in Hz is tracked adaptively. The BFM stimuli are identical to MFM except for presentation to both ears with increasing frequency in one ear and decreasing in the other. The dependent variable is the threshold (in Hz) at which participants stop responding accurately. Lower scores indicate better performance.

Participants are presented with auditory sequences of spoken digits and visual sequences of written letters. Participants will be instructed to recall a particular sequence either in advance (assesses selective attention) or only afterwards (assesses divided attention). The dependent variable is the fall-off of reaction time and accuracy across a the single-stream task. Higher scores indicate better performance.

Participants are shown a series of numbers one at a time. Their goal is to add the last two numbers presented and select the answer that correctly adds the two numbers. Participants are shown single digit numbers and are required to answer on a number pad . The dependent variable is the total number of correct responses. Higher scores indicate better performance.

The participant is presented with a mixed order of letters and numbers and must remember and sort them numerically and alphabetically. Set size starts at 2 and increases until the participants fail to recall both trials at a given set size. The dependent variable is Score (total number of correct trials). Higher scores indicate better performance.

Participants are presented with a consecutive stream of tones through headphones, and are asked to tap on the screen every time the currently presented item matches the one presented N items earlier. The dependent variable consists of accuracy on each of the levels calculated as hits/(hits+misses+false alarms). Higher scores indicate better performance.

Self report measure assessing current mood states in adults. Participants rate descriptive mood words according to how they feel during the specified assessment timeframe using a 5-point response scale. The dependent variable is Total Mood Disturbance (TMD) score, with higher values indicating greater overall mood disturbance.

Self-report questionnaire that assesses six domains of well-being (self-acceptance, environmental mastery, positive relations, purpose in life, personal growth, and autonomy). Higher scores indicate greater perceived well-being.

A 7-item self-report measure assessing positive mental well-being. Participants rate statements about their thoughts and feelings over the specified assessment period using a 5-point response scale. The dependent variable is the total well-being score, with higher values indicating greater mental well-being.

Self-report survey of participants' past musical experiences, with items including the Active Engagement, Perceptual Abilities, and Emotions factors from the Goldsmith's Music Sophistication Index, the Absorption factor from the Extended Barcelona Music Reward Questionnaire, and selected items from the Ollen Music Sophistication Index. Higher scores indicate greater self-reported musical involvement and ability.

Participants will listen to a series of short rhythmic and melodic sequences and determine whether each pair is identical or different from one another. The dependent variable is percentage correct. Higher scores indicate better performance.

This digitally administered battery includes a word list learning and complex figure drawing task, a revised version of the Boston Naming Task, a vocabulary task (Shipley), the Trail Making Task (parts A and B), and an older-adult version of the University of California Matrix Reasoning Task. The dependent variables are percentage correct for Boston Naming Shipley, and Matrix Reasoning where, higher scores indicate better performance. For the Trail Making Task, the dependent variable is the time difference between parts A and B, and lower scores indicate better performance. For the word-list learning task, the dependent variable is the total number of words correctly recalled across the learning trials, with higher values indicating better performance. For the complex figure task, the dependent variable is the total accuracy score based on correctly reproduced figure elements, with higher values indicating better performance.