1. Sub-adult guppies were given one or other of three diets (Basal, Chol. I, and Chol. II) that differed in choline contents for a month in freshwater and seawater. 2. The growth of fish fed on the Chol. II diet (Choline 4g/100g) was greater than that of fish fed on the Chol. I diet (Choline 0.5g/100g), and the growth of fish fed on the Basal diet (Choline free) was the lowest. 3. Trimethylamine (TMA) and Trimethylamine Oxide (TMO) concentrations in the muscle or whole body of the fish were determined. The concentrations of TMA and TMO were influenced by the dietary choline level and environmental seawater. Especialy TMO concentrations were markedly higher when fish were fed on Chol. II than Chol. I, and reared in the seawater than in the freshwater. 4. These results suggest that the following conversion system functions in bodies of the guppy: Choline→TMA→TMO

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[in Japanese]

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[in Japanese]

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It is assumed useful to clarify the affective value of musical pieces for mood induction. For this purpose, the impression method is conducted using a rating scale composed of adjectives representing the affective values. There is a possibility of bias caused by the evaluative dimension of terms on rating. The evaluative dimension is related with some specific descriptive dimensions in affective meaning space along with a characteristic of each person. The likes and dislikes for musical pieces or the mood during listening to music could affect the rating of the affective values of musical pieces on the terms having the specific descriptive dimension. Providing a list of evaluative values of terms representing affective values of music with some available forms is thought to be able to modify the bias. Female undergraduate students and female junior college students were requested to rate how desirable each of the listed 40 affective terms were. The rating values of terms rated desirable were more narrowly distributed between subjects than those terms rated undesirable.

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