“…However, psychological need thwarting, that arises in response to perceiving that psychological needs are actively undermined, is understudied ( Costa et al, 2015 ; Opdenakker, 2021 ). The few studies addressing this topic, found evidence for its relevance in relation to maladaptive functioning (see Bartholomew et al, 2018 ; Patall et al, 2018 ; Vandenkerckhove et al, 2019 ; Opdenakker, 2021 ; Conesa et al, 2022 ). Furthermore, there is some evidence that need-supportive teacher behavior is more important than need-thwarting teacher behavior for adaptive student behavior and optimal functioning ( Skinner et al, 2008 ; Jang et al, 2016 ; Patall et al, 2018 ; Opdenakker, 2021 ) and that need-thwarting teacher behavior is more important for forms of maladaptive behavior and sub-optimal functioning ( Jang et al, 2016 ; Patall et al, 2018 ; Opdenakker, 2021 ), although, depending on the student outcome, also unique and independent effects of both kinds of behaviors can be visible ( Patall et al, 2018 ; Opdenakker, 2021 ).…”