1. A training method for enhancing meta-attention of a user, the method comprising: presenting a user with a cognitive task, wherein the cognitive task includes a stimuli and the task specifies a desired response to the stimuli; and assessing attentional control of the user in relation to the cognitive task; and providing at least one of an instruction and a feedback, based on the attentional control assessment, to the user, thereby enabling the user to reflect on the meta-attention of the user.