An adaptive robot teacher boosts a human partner’s learning performance in joint action

Abstract Michael Tomasello explains the human sense of obligation by the role it plays in negotiating practices of acting jointly and the commitments they underwrite. He draws in his work on two models of joint action, one from Michael Bratman, the other from Margaret Gilbert. But Bratman's makes the explanation too difficult to succeed, and Gilbert's makes it too easy.

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Social epistemic actions

Behavioral and Brain Sciences ◽

10.1017/s0140525x19002802 ◽

2020 ◽

Vol 43 ◽

Author(s):

Giovanni Pezzulo ◽

Laura Barca ◽

Domenico Maisto ◽

Francesco Donnarumma

Keyword(s):

Social Interaction ◽

Joint Action ◽

Niche Construction ◽

Cultural Practices ◽

Learning Processes ◽

Epistemic Actions ◽

Target Article ◽

Online Social Interaction

Abstract We consider the ways humans engage in social epistemic actions, to guide each other's attention, prediction, and learning processes towards salient information, at the timescale of online social interaction and joint action. This parallels the active guidance of other's attention, prediction, and learning processes at the longer timescale of niche construction and cultural practices, as discussed in the target article.

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Learning and Consolidation of Verbal Declarative Memory in Patients with Posttraumatic Stress Disorder

Zeitschrift für Psychologie / Journal of Psychology ◽

10.1027/0044-3409/a000020 ◽

2010 ◽

Vol 218 (2) ◽

pp. 135-140 ◽

Cited By ~ 1

Author(s):

Slawomira J. Diener ◽

Herta Flor ◽

Michèle Wessa

Keyword(s):

Posttraumatic Stress Disorder ◽

Posttraumatic Stress ◽

Verbal Memory ◽

Stress Disorder ◽

Declarative Memory ◽

Memory Performance ◽

Verbal Learning ◽

Depression Scale ◽

Learning Performance ◽

Ptsd Symptoms

Impairments in declarative memory have been reported in posttraumatic stress disorder (PTSD). Fragmentation of explicit trauma-related memory has been assumed to impede the formation of a coherent memorization of the traumatic event and the integration into autobiographic memory. Together with a strong non-declarative memory that connects trauma reminders with a fear response the impairment in declarative memory is thought to be involved in the maintenance of PTSD symptoms. Fourteen PTSD patients, 14 traumatized subjects without PTSD, and 13 non-traumatized healthy controls (HC) were tested with the California Verbal Learning Test (CVLT) to assess verbal declarative memory. PTSD symptoms were assessed with the Clinician Administered PTSD Scale and depression with the Center of Epidemiological Studies Depression Scale. Several indices of the CVLT pointed to an impairment in declarative memory performance in PTSD, but not in traumatized persons without PTSD or HC. No group differences were observed if recall of memory after a time delay was set in relation to initial learning performance. In the PTSD group verbal memory performance correlated significantly with hyperarousal symptoms, after concentration difficulties were accounted for. The present study confirmed previous reports of declarative verbal memory deficits in PTSD. Extending previous results, we propose that learning rather than memory consolidation is impaired in PTSD patients. Furthermore, arousal symptoms may interfere with successful memory formation in PTSD.

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