How does this theory of self-expansion explain the process of falling in love?

这种“扩张自我”的理论如何解释相爱的过程？

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The effect of self-expansion is particularly pronounced when people first fall in love.

自我扩张的影响在人们第一次陷入爱河时特别明显。

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The Stony Brook researchers conducted experiments using activities that stimulated self-expansion.

石溪分校的研究人员在实验中，安排了激发“自我提升”的活动。

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The rise of the self-sufficient home comes amid an expansion in green homebuilding that is projected to swell to between 29% and 38% of the U.S. residential market by 2016, according to a study by McGraw-Hill Construction and the National Association of Home Builders, up from 17% in 2011.

FORBES: Off-The-Grid Mansions

And that way the expansion then becomes more self-generating and sustained, and perhaps to some extent makes believers out of even those who sort of argued against the fact that it would continue, and certainly, I think, put to rest any talk of double dips.

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Nevertheless, it firmly rejects any expansion of the scope of self-defence under Article 51.

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