Theoretically what this means is that in order to express this gene, in a violent way, very early on, before puberty, you have to be involved in something that is really traumatic -- not a little stress, not being spanked or something, but really seeing violence, or being involved in it, in 3D.
In teoria questo significa che per poter esprimere questo gene, in modo violento, molto presto, prima della pubertà, bisogna essere coinvolti in qualcosa di traumatico, non uno stress minimo, una sculacciata o cose così. Bensì assistere a violenze, o esserne coinvolti, in 3D.