from which...用作定语，修饰其前的名词，可视为定语从句的省略和简化。

…new perspectives (视角) from which to study how people manage their lives

=…new perspectives (视角) from which we can study how people manage their lives

类似的用法如：

This is a good point from which to watch (=from which we can watch) the race. 这是个观看比赛的好地方。

It’s an ideal location from which to explore (=from which we can explore) the Lake District. 这是一个勘查湖区的理想地点。

Although the continuing popular appeal of emotional intelligence is desirable, we hope that such attention will excite a greater interest in the scientific and scholarly study of emotion. It is our hope that in coming decades, advances in science will offer new perspectives (视角) from which to study how people manage their lives. Emotional intelligence, with its focus on both head and heart, may serve to point us in the right direction.

句意：虽然情商具有持续广泛的吸引力是件好事，但我们希望这种关注能激发人们对情感的科学和学术研究产生更大的兴趣。我们希望，在未来几十年里，科学的进步将提供新的视角，据此可以研究人们如何管理自己的生活。情商专注于大脑和心灵，可能会为我们指明正确的方向。

注：这个网站有不少比较好的高考资料，你可以看看这里：

https://www.cpsenglish.com/article/360