Body Acceptance After Baby Intervention

Postpartum body image will be measured using the Body Image in Pregnancy Scale adapted for postpartum. Only the following subscales will be measured: (1) Preoccuptation with Physical Appearance; (2) Prioritization of Appearance over Function; (3) Appearance-Related Behavioral Avoidance. Subscales range from 1-5 with higher scores indicating greater body image disturbance.

Body Appreciation will be measured using The Body Appreciation Scale-2 Short Form. Scores range from 3-15 with higher scores indicating greater body appreciation.

Psychological flexibility will be measured with the Comprehensive assessment of Acceptance and Commitment Therapy processes (CompACT). Scores range from 0-138 with higher scores indicating greater psychological flexibility. Subscales can also be calculated to measure (1) Openness to Experience, (2) Behavioral Awareness, and (3) Valued Action.

Postpartum depression will be measured with the Edinburgh Postnatal Depression Scale (EPDS). Scores range from 0-30 with higher scores indicating greater depressive symptoms.

Eating disorder symptoms will be measured with the Eating Disorder Examination Questionnaire Short (EDE-QS). Scores range from 0-36 with higher scores indicating greater severity of eating disorder symptoms.

Intuitive eating will be measured with the Intuitive Eating Scale-3 (IES-3) . Each item ranges from 1-5 and can be averaged to obtain a global score with higher scores indicating greater intuitive eating. Subscale scores (Unconditional Permission to Eat; Eating for Physical Reasons; Reliance on Hunger and Satiety Cues; Body-Food Choice Congruence) can also be calculated.

Breastfeeding self-efficacy will be measured with the Breastfeeding Self-Efficacy Scale (BSES-SF). Scores range from 14-70 with higher scores indicating greater self-efficacy.

Bottle-feeding self-efficacy will be measured with the Bottle Feeding Self-Efficacy Scale. Scores range from 20-100 with higher scores indicating greater self-efficacy.

Visual analog scales will be used to measure state anxiety, negative affect, positive affect, appearance satisfaction, weight satisfaction, muscle tone satisfaction, confidence, body acceptance, body positivity, anger, body functionality appreciation, body appreciation, broad concept of beauty (body sizes and body shapes) and body positive protective filter. Each item ranges from 0-100 with greater scores indicating greater levels of the respective variable.

Hopelessness will be measured with the Beck Hopelessness Scale - 4-item version (BHS). Each item ranges from 0-3. Items are averaged to obtain a total score with higher scores indicating greater hopelessness.

To measure intervention acceptability we will use the The Program Feedback Scale (PFS). The PFS asks participants to rate agreement with seven statements about the acceptability of the SSI (e.g. "I enjoyed the program") on a five-point scale. Higher scores reflect greater acceptability for each item.