This is deliberately descriptive. It needs to be set apart from "émoussement affectif" too.

"Discordance" in French psychology can describe a lack of logic in the way the individual expresses himself (dans le discours). What is said can be full of contradictions, follow on in no logical order or be incoherent.
It can also be observed with reference to emotion: there is a lack of coherence between affect and behaviour or expression. Sometimes the emotions expressed are contradictory or ambivalent - what is said and done seem unconnected.
Idem in terms of movement.


Extract from my French psycho dictionary "Dictionnaire de psychologie", PUF, Coll;. Quadrige, 2012. Entry by M-C handy-Bale, p.215:

The way the term is used today being it closer to the more commonly-used term of "dissociation".
"Ces deux termes [discordance + dissociation] peuvent être tenus poru "équivalents" au niveau clinique, parcqu'ils qualifient un même processus morbide." And further on : "Les liesn de ce term [discordance] avec la schizoprhénie sont donc très étroits et renvoient à la définition donnée de la dissociation donnée dans ce dictionnaire".



For "émoussment affectif" you might find that "flattening of affect" is helpful for this one, or "emotional blunting", but also "reduced display of afffect".

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Note added at 10 hrs (2018-01-16 12:29:09 GMT)
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Part of the definition of "dissociation" on p.218 of the same reference is "...dissociation désigne la rupture de l'unité psychique, celle-ci présidant, chez le sujet normal, à l'intégration harmonieuse des différents champs constitutifs de la personnalité : affect, pensée, comportement."

You might like to follow up EN-EN sources with "dissociation", but the notions can have different meaning. Further research is need to see how good a fit this suggestion is in your context. ;-)