The phrase "also demonstrate that when" is correct and usable in written English.
It can be used when introducing a point that illustrates a condition or situation in relation to a previous statement or argument.
Example: "The results of the study also demonstrate that when participants are given clear instructions, their performance improves significantly."
Alternatives: "further show that when" or "additionally indicate that when".
Our findings also demonstrate that when employees are striving to achieve goals, it might be wise to monitor the methods that they use.
We also demonstrate that, when mixed with photochromic organic compounds, ILGs display rapid color changes, similar to light-triggered camouflage, on living Musca domestica specimens.
The analytical results also demonstrate that when SS is spread within columns, the system over-strength increases by 30% with respect to the carbon-steel benchmark structure.
We also demonstrate that when security and collaboration measures are properly enforced, profitable collaboration is a preferable strategy for all peers in ad hoc networks.
We also demonstrate that when applying the energy law preserving method to the model of Cahn Hilliard type, un-physical interfacial oscillations may occur.
The same studies I referenced above also demonstrate that when other people look at crudely drawn sketches, they may misinterpret elements of the drawings in ways that serendipitously lead to new ideas.
From the ctrl samples, it was also demonstrated that, when the bioactive agents were present, a higher cell seeding density resulted in increased ALP activity.
(No one told her that there is no I in E!) The ceremony was intended to show support for the Writers Guild, but it also demonstrated that when it comes to award-show writing, less is more.
Using DMA techniques we also demonstrated that when pure trehalose, a fragile glass-former, was diluted with a small amount of the strong glass-former, glycerol, the overall mixture was strengthened significantly.
It was not just showing people who do not understand her and who do not trust her who she is as a person, or laying out her policy proposals, but also demonstrating that when she represents them on the world stage, she would do so with that hard-to-pin-down aura of leadership and power.
