Alain Morin

Szmimary.—The present report investigated the question of how individual differences in self-consciousness devdop. Rimé and LeBon proposed that high self-consciousness follows a history of frequent exposure to selffocusing stimuli, i.e., mirrors, audiences, audio and video devices, and cameras. To explore this hypothesis private and public self-consciousness and past exposure to self-focusing stimuli were assessed in 438 subjects. Analysis indicated that history of frequent exposure to self-focusing stimuli is significantly but weakly related to high private self-consciousness in men and to high public self-consciousness in women. This supports previous observations suggesting that the routes to the development of selfconsciousness seem to differ for the two sexes

There is little doubt that animals are ―conscious‖. Animals hunt prey, escape predators, explore new environments, eat, mate, learn, feel, and so forth. If one defines consciousness as being aware of external events and experiencing mental states such as sensations and emotions (Natsoulas, 1978), then gorillas, dogs, bears, horses, pigs, pheasants, cats, rabbits, snakes, magpies, wolves, elephants, and lions, to name a few creatures, clearly qualify. The contentious issue rather is: Do these animals know that they are perceiving an external environment and experiencing internal events? Are animals self-conscious? Recent attempts at understanding animal consciousness (e.g., Edelman & Seth, 2009) agree that non-human animals most probably possess ―primary‖ (or ―minimal‖) consciousness. But these views also argue that unlike humans animals lack many (but not all) elements that make up higher-order consciousness—the capacity to self-reflect on the contents of primary consciousness. In this chapter I will aim at offering a more elaborate picture of this position. I will present detailed information on what is meant by ―higher-order consciousness‖—i.e., selfawareness. I will suggest that some dimensions of self-awareness (e.g., self-recognition, metacognition, mental time travel) may be observed in several animals, but that numerous additional aspects (e.g., self-rumination, emotion awareness) seem to be absent. Some other self-related processes, such as Theory-of Mind, have been identified in animals, but not as the full-fledged versions found in humans. I will postulate that these differences in levels of selfawareness between humans and animals may be attributable to one distinctive feature of human experience: the ability to engage in inner speech.

In the past, researchers have focused mainly on the effects and consequences of self-awareness; however, they have neglected a more basic issue pertaining to the specific mechanisms that initiate and sustain self-perception. The author presents a model of self-awareness that proposes the existence of 3 sources of self-information. First, the social milieu includes early face-to-face interactions, self-relevant feedback, a social comparison mechanism that leads to perspective taking, and audiences. Second, contacts with objects and structures in the physical environment foster self–world differentiation in infants; this environment also contains self-focusing and reflecting stimuli, such as mirrors and video cameras. Third, the self can develop bodily awareness through proprioception and can reflect on itself using imagery and inner speech. Furthermore, self-awareness is mainly mediated by the prefrontal lobes. The author establishes various links among these different neurological, social, ecological, and cognitive elements of the model

The present review of literature surveys two main issues related to self-referential processes: (1) Where in the brain are these processes located, and do they correlate with brain areas uniquely specialized in self-processing? (2) What are the empirical and theoretical links between inner speech and self-awareness? Although initial neuroimaging attempts tended to favor a right hemispheric view of selfawareness, more recent work shows that the brain areas which support self-related processes are located in both hemispheres and are not uniquely activated during self-reflective tasks. Furthermore, self-awareness at least partially relies on internal speech. An activation of Broca's area (which is known to sustain inner speech) is observed in a significant number of brain-imaging studies of self-reflection. Loss of inner speech following brain damage produces self-awareness deficits. Inner speech most likely can internally reproduce social mechanisms leading to self-awareness. Also, the process of self-reflection can be seen as being a problem-solving task, and self-talk as being a cognitive tool the individual uses to effectively work on the task. It is noted that although a large body of knowledge already exists on self-awareness, little is known about individual differences in dispositional self-focus and types of self-attention (e.g., rumination vs. self-reflection)

been recently proposed (Morin, 2003; 2004). The model takes into account most known mechanisms and processes leading to self-awareness, and examines their multiple and complex interactions. Inner speech is postulated to play a key-role in this model, as it establishes important connections between many of its ele- ments. This paper first reviews past and current references to a link between self-awareness and inner speech. It then presents an analysis of the nature of the relation between these two concepts. It is suggested that inner speech can inter- nally reproduce and expand social and physical (ecological) sources of self- awareness. Inner speech can also create a psychological distance between the self and mental events it experiences (thus facilitating self-observation) it can act as a problem-solving device where the self represents the problem and self-information the solution, and can label aspects of one’s inner life that would otherwise be difficult to objectively perceive. Empirical evidence supporting the role of inner speech in self-awareness is also presented

Little is know about factors that influence the development of public self-consciousness. One potential factor is exposure to audiences: being repeatedly aware of one's object status could create a high disposition to focus on public self-aspects. To explore this hypothesis public self-consciousness was assessed in two groups of subjects: 62 professors and actors (high exposure to audiences) and 39 people without audience experience. Analysis show that significant differences exist for public self-consciousness in men only. Also, history of frequent exposure to audience is significantly but weakly correlated with high public self-consciousness in men. This supports previous observations indicating that self-consciousness seems to develop differently for men and women.

In this commentary I use recent empirical evidence and theoretical analyses concerning the importance of language and the meaning of self-recognition to reevaluate the claim that the right mute hemisphere in commissurotomized patients possesses a full consciousness. Preliminary data indicate that inner speech is deeply linked to self-awareness; also, four hypotheses concerning the crucial role inner speech plays in self-focus are presented. The legitimacy of self-recognition as a strong operationalization of self-awareness in the right hemisphere is also questioned on the basis that it might rather tap a preexisting body awareness having little to do with an access to mental events. I conclude with the formulation of an alternative interpretation of commissurotomy according to self-awareness — a “complete” one in the left hemisphere and a “primitive” one in the right hemisphere