rospectively. However, for years, retrospective reports of pregnancy wantedness have been recognized to be subject to recall error or rationalization. As long as three decades ago, it was noted that respondents might not admit to what could be perceived as an inadequacy, or that they might change their attitude based on positive experiences with a child resulting from a pregnancy that, at conce...

Parameterized complexity theory has enabled a refined classification of the difficulty of NPhard optimization problems on graphs with respect to key structural properties, and so to a better understanding of their true difficulties. More recently, hardness results for problems in P were achieved using reasonable complexity theoretic assumptions such as: Strong Exponential Time Hypothesis (SETH)...