This paper considers two topics. One is the acquisition of quantifier-negation interaction. In the book under review, Musolino discusses quantifier-negation interaction in child language based on data obtained from English and Kannada. Taking into consideration data obtained from Japanese as well, this paper points out problems with Musolino's paper and presents a new analysis. The other topic to be considered is the acquisition of additive particles. In the book under review, Nederstigt and Bergsma investigate German and Dutch additive particles and take different positions as to whether children are adult-like in the interpretation of the particles. This paper shows that data obtained from Japanese support Nederstigt's claim.