Here is the ANOVA summary table for a two-factor fixed-effects ANOVA, where there are four levels of factor A (treatment) and seven levels of factor B (severity rating for learning disability).  Each cell includes 39 students.

Source	$\displaystyle {S}{S}$	$\displaystyle {d}{f}$	$\displaystyle {M}{S}$	$\displaystyle {F}$	$\displaystyle {p}$
$\displaystyle {A}$	1991.6	3	663.87	3.223	0.022
$\displaystyle {B}$	3419.4	6	569.9	2.767	0.0113
$\displaystyle {A}\times{B}$	7869.6	18	437.2	2.122	0.0041
Error	219184	1064	206
TOTAL	232464.6	1091

Please calculate the requested effect sizes and report accurate to 3 decimal places.

Partial $\displaystyle \eta^{{2}}$ for the main effect from factor B:
$\displaystyle {\eta_{{B}}^{{2}}}=$

Effect size for the interaction effect ($\displaystyle {A}\times{B}$):
$\displaystyle {\omega_{{{A}{B}}}^{{2}}}=$

Special Note: 
Be careful with the calculations for $\displaystyle \eta^{{2}}$ vs. $\displaystyle \text{partial-}\eta^{{2}}$.  (This is not meant to be a “trick” question.)
The formulas are very similar, and it is important to note that SPSS reports the partial value (not the conventional $\displaystyle \eta^{{2}}$).  As a reminder, $\displaystyle \eta^{{2}}=\frac{{{S}{S}_{{X}}}}{{{S}{S}_{{\text{total}}}}}$ and $\displaystyle \text{partial-}\eta^{{2}}=\frac{{{S}{S}_{{X}}}}{{{S}{S}_{{X}}+{S}{S}_{{\text{within}}}}}$