 However, this assumption has gone primarily untested with the exception of Notarius Levenson( 1979 ) , whose research found that internalizers are more physiologically reactive to emotional stimuli than externalizers.
<meaning-changed>  However, this assumption has gone primarily untested with the exception of Notarius Levenson( 1979 ) , whose research found that internalizers are more physiologically reactive to emotional stimuli than externalizers.
 However, this assumption has gone primarily untested with the exception of Notarius Levenson( 1979 study by Notarius and Levenson , whose research found that internalizers are more physiologically reactive to emotional stimuli than externalizers.