共通テスト 2023年(本試験)- 4

However, / the repetitive反復的な learning strategy方法 he discussed(批判する), [[ which is called " massed大量 learning," ]] is effective効果的な. /
→ which は関係代名詞。直前にカンマがあるため,前の内容を受けて「それは~」と続く。
There is another kind of repetitive反復的な learning / called " spaced間隔を空けた learning," / in which / students memorize(記憶する) new information / and then review(復習する) it over  / longer intervals間隔. /
→ in which:直前にカンマがあるため,前の内容を受けて「そこでは~」と続く。which は関係代名詞。