MatchaDB

2026Journal articleFree to read

Sip and Strum: Matcha Intake and a Practice-Reduction Reinforcement Contingency in Beginner Ukulele Skill Acquisition

Joycelyn Ann Faith S. Culajara, Felisse Marianne Z. San Juan

International Journal of Behavioral and Social Analytics

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Abstract

This study examined differences in beginner ukulele skill acquisition under three combinations of matcha intake and a practice-reduction reinforcement contingency. A quasi-experimental three-group design was employed involving 15 students aged 18–25 years with no prior musical-instrument experience. Participants were assigned to one of three conditions: no matcha with reinforcement, matcha with reinforcement, or matcha without reinforcement. The reinforcement contingency consisted of shortening the remaining practice period when a participant attained at least 85% performance accuracy at the prescribed tempo twice consecutively. Participants completed two structured practice sessions, followed by retention assessments conducted 24–48 hours after learning. Musical performance was evaluated using accuracy, tempo maintenance, criterion attainment, correct chord progressions, and retention scores. Descriptive results showed that the matcha-with-reinforcement group exhibited the strongest overall performance, including more frequent tempo maintenance, higher criterion attainment, and more correct chord progressions. This group also obtained the highest mean retention score. Welch’s one-way analysis of variance indicated a statistically significant difference in retention across the three conditions, with the matcha-with-reinforcement group outperforming the matcha-only group. However, the small sample and absence of a no-matcha-without-reinforcement condition preclude separate estimates of the two interventions and any conclusion regarding their interaction. The findings provide preliminary evidence that combining physiological stimulation with a structured practice-reduction contingency may support beginner musical learning, although confirmation through a larger, complete…

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Cite this study

Joycelyn Ann Faith S. Culajara, Felisse Marianne Z. San Juan. (2026). Sip and Strum: Matcha Intake and a Practice-Reduction Reinforcement Contingency in Beginner Ukulele Skill Acquisition. International Journal of Behavioral and Social Analytics. https://doi.org/10.65166/sf44z353

DOI: 10.65166/sf44z353

More on l-theanine and caffeine

2020Journal articleFree to read

Health Benefits and Chemical Composition of Matcha Green Tea: A Review.

Kochman J, Jakubczyk K, Antoniewicz J, et al. — Molecules (Basel, Switzerland)

Japanese matcha is a type of powdered green tea, grown in a traditional way. Shading of the plants during the growth period enhances the processes of synthesis and accumulation of biologically active compounds, including theanine,…

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2020Journal articleFree to read

Antioxidant Properties and Nutritional Composition of Matcha Green Tea.

Jakubczyk K, Kochman J, Kwiatkowska A, et al. — Foods (Basel, Switzerland)

Matcha green tea (Camellia sinensis), which originates from Japan, is commonly considered as particularly beneficial to health. A large content of polyphenols, amino acids (mainly tannins) and caffeine potentially increase the antioxidant…

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2021Journal article

Intelligent evaluation of taste constituents and polyphenols-to-amino acids ratio in matcha tea powder using near infrared spectroscopy.

Guo Z, Barimah AO, Yin L, et al. — Food chemistry

Matcha tea is rich in taste and bioactive constituents, quality evaluation of matcha tea is important to ensure flavor and efficacy. Near-infrared spectroscopy (NIR) in combination with variable selection algorithms was proposed as a fast…

Chemical / analyticalAntioxidants and polyphenolsL-theanine and caffeineProcessing, milling and qualityCited 117×
2019Journal article

Evaluation of matcha tea quality index using portable NIR spectroscopy coupled with chemometric algorithms.

Wang J, Zareef M, He P, et al. — Journal of the science of food and agriculture

Abstract BACKGROUND The study reports a portable near infrared (NIR) spectroscopy system coupled with chemometric algorithms for prediction of tea polyphenols and amino acids in order to index matcha tea quality. RESULTS Spectral data were…

Randomized controlled trialAntioxidants and polyphenolsL-theanine and caffeineProcessing, milling and qualityCited 114×

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