“…Collaborative learning, as a social-constructive instructional strategy, has become increasingly popular in higher education to promote students’ learning engagement [ 1 , 2 ], social interaction [ 3 , 4 ], and academic performance [ 5 , 6 ]. The key to excellent group performance and individual gains in collaborative learning is the quality of interpersonal interaction among participants [ 7 ], which is influenced by group composition [ 8 , 9 ]. Gender, as a key demographic attribute, has been regularly used to compose collaborative learning groups [ [10] , [11] , [12] , [13] ], and gender diversity induced a wide range of factors highly relevant for group functioning, such as behavioral patterns [ 14 ], peer interaction [ 15 ], and emotional expression [ 16 , 17 ], which determine the overall efficacy and experience of collaborative learning.…”