On a deeper level, business, along with frustration at the European Union's lack of coordinated policies, is driving the relationship, Mr. Kundnani and Jonas Parello-Plesner, analysts at the European Council on Foreign Relations, say in their report, "China and Germany: Why the Emerging Special Relationship Matters for Europe".
Not that the dominant things driving a relationship are overlooked.
"The danger is that it is not the use of hormones that is driving this relationship, but it is being the kind of woman who uses hormone therapy," Dr. Breitner said.
Domestic American investors may be driving the relationship, repatriating funds in 2008 when they were nervous about the state of financial markets and sending the money abroad again this summer because of a perception that the global economy is reviving.But although risk aversion may be a factor, describing the dollar as a "safe haven" seems dubious.
For the first time, science and technology is driving the relationship between our countries.
Increasing plant species diversity has been shown to be beneficial for pollinators, and it is often suggested that functional traits are driving this relationship.
"The relationship between diversity and invasion success in grasslands or plant communities wasn't really known at either small or large scales, and our study identifies the mechanism driving this relationship at small scales".
Many studies include mean annual temperature in biomass models [77, 109], but theory suggests that it may be the temperature range driving this relationship as photosynthesis correlates with maximum temperatures, but respiration with minimum temperatures [76, 110, 111].
Note that the Paper Folding Test, which typically correlates with tests of general intelligence, (e.g., Visser, Ashton, & Vernon, 2006), did not significantly predict strategy choice in any of our models, suggesting that pre-existing individual differences in intelligence are not driving the relationship seen between mechanistic knowledge and strategy choice.
